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122120212012 = 22311499319661
BaseRepresentation
bin111000110111011101…
…1101000111000101100
3102200012202201112121021
41301232323220320230
54000100233241022
6132033511543524
711552152450351
oct1615673507054
9380182645537
10122120212012
1147877748857
121b80198aba4
13b692530ca6
145ca6b74628
15329b1b17c7
hex1c6eee8e2c

122120212012 has 24 divisors (see below), whose sum is σ = 214451389152. Its totient is φ = 60848486400.

The previous prime is 122120212007. The next prime is 122120212013. The reversal of 122120212012 is 210212021221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122120212013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6201462 + ... + 6221122.

It is an arithmetic number, because the mean of its divisors is an integer number (8935474548).

Almost surely, 2122120212012 is an apocalyptic number.

It is an amenable number.

122120212012 is a deficient number, since it is larger than the sum of its proper divisors (92331177140).

122120212012 is a wasteful number, since it uses less digits than its factorization.

122120212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24969 (or 24967 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122120212012 its reverse (210212021221), we get a palindrome (332332233233).

The spelling of 122120212012 in words is "one hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, twelve".

Divisors: 1 2 4 311 622 1244 4993 9986 19661 19972 39322 78644 1552823 3105646 6114571 6211292 12229142 24458284 98167373 196334746 392669492 30530053003 61060106006 122120212012