102012121012121 has 12 divisors (see below), whose sum is σ = 108910369036800. Its totient is φ = 95528938570560.

The previous prime is 102012121012099. The next prime is 102012121012201. The reversal of 102012121012121 is 121210121210201.

It is a de Polignac number, because none of the positive numbers 2^k-102012121012121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102012121012121.

It is not an unprimeable number, because it can be changed into a prime (102012121018121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 886834745 + ... + 886949766.

It is an arithmetic number, because the mean of its divisors is an integer number (9075864086400).

Almost surely, 2^{102012121012121} is an apocalyptic number.

It is an amenable number.

102012121012121 is a deficient number, since it is larger than the sum of its proper divisors (6898248024679).

102012121012121 is a wasteful number, since it uses less digits than its factorization.

102012121012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773784744 (or 1773784727 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102012121012121 its reverse (121210121210201), we get a palindrome (223222242222322).

The spelling of 102012121012121 in words is "one hundred two trillion, twelve billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".