122102021211012 has 18 divisors (see below), whose sum is σ = 308646775839038. Its totient is φ = 40700673736992.

The previous prime is 122102021210977. The next prime is 122102021211067. The reversal of 122102021211012 is 210112120201221.

It can be written as a sum of positive squares in only one way, i.e., 121694742393156 + 407278817856 = 11031534^2 + 638184^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1695861405673 + ... + 1695861405744.

Almost surely, 2^{122102021211012} is an apocalyptic number.

122102021211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122102021211012 is an abundant number, since it is smaller than the sum of its proper divisors (186544754628026).

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

122102021211012 is a wasteful number, since it uses less digits than its factorization.

122102021211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391722811427 (or 3391722811422 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122102021211012 its reverse (210112120201221), we get a palindrome (332214141412233).

The spelling of 122102021211012 in words is "one hundred twenty-two trillion, one hundred two billion, twenty-one million, two hundred eleven thousand, twelve".