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122120130030 = 2355097997389
BaseRepresentation
bin111000110111011101…
…1010100110111101110
3102200012202120101010220
41301232323110313232
54000100223130110
6132033510112210
711552151656343
oct1615673246756
9380182511126
10122120130030
11478776a21a8
121b80194b666
13b692502892
145ca6b527ca
15329b197370
hex1c6eed4dee

122120130030 has 32 divisors (see below), whose sum is σ = 293664160800. Its totient is φ = 32501384832.

The previous prime is 122120129983. The next prime is 122120130053. The reversal of 122120130030 is 30031021221.

It is a super-4 number, since 4×1221201300304 (a number of 45 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 122120129991 and 122120130009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3983425 + ... + 4013964.

It is an arithmetic number, because the mean of its divisors is an integer number (9177005025).

Almost surely, 2122120130030 is an apocalyptic number.

122120130030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122120130030 is an abundant number, since it is smaller than the sum of its proper divisors (171544030770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122120130030 is a wasteful number, since it uses less digits than its factorization.

122120130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7997908.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 122120130030 its reverse (30031021221), we get a palindrome (152151151251).

The spelling of 122120130030 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred thirty thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 509 1018 1527 2545 3054 5090 7635 15270 7997389 15994778 23992167 39986945 47984334 79973890 119960835 239921670 4070671001 8141342002 12212013003 20353355005 24424026006 40706710010 61060065015 122120130030