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122121000988 = 2274499713729
BaseRepresentation
bin111000110111011111…
…0101001100000011100
3102200012211012121212121
41301232332221200130
54000100434012423
6132033540512324
711552162244520
oct1615676514034
9380184177777
10122121000988
11478781375a8
121b8020ab6a4
13b69274913c
145ca6cdbd80
15329b2ba45d
hex1c6efa981c

122121000988 has 24 divisors (see below), whose sum is σ = 244785996000. Its totient is φ = 52221001728.

The previous prime is 122121000931. The next prime is 122121001021. The reversal of 122121000988 is 889000121221.

It is a super-2 number, since 2×1221210009882 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4844293 + ... + 4869436.

It is an arithmetic number, because the mean of its divisors is an integer number (10199416500).

Almost surely, 2122121000988 is an apocalyptic number.

It is an amenable number.

122121000988 is an abundant number, since it is smaller than the sum of its proper divisors (122664995012).

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

122121000988 is a wasteful number, since it uses less digits than its factorization.

122121000988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714189 (or 9714187 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 122121000988 in words is "one hundred twenty-two billion, one hundred twenty-one million, nine hundred eighty-eight", and thus it is an aban number.

Divisors: 1 2 4 7 14 28 449 898 1796 3143 6286 12572 9713729 19427458 38854916 67996103 135992206 271984412 4361464321 8722928642 17445857284 30530250247 61060500494 122121000988