121210120212102 has 48 divisors (see below), whose sum is σ = 265404187116432. Its totient is φ = 39975568312320.

The previous prime is 121210120212029. The next prime is 121210120212109. The reversal of 121210120212102 is 201212021012121.

121210120212102 is a `hidden beast` number, since 1 + 21 + 210 + 120 + 212 + 102 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210120212109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3592899 + ... + 15979022.

It is an arithmetic number, because the mean of its divisors is an integer number (5529253898259).

Almost surely, 2^{121210120212102} is an apocalyptic number.

121210120212102 is an abundant number, since it is smaller than the sum of its proper divisors (144194066904330).

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

121210120212102 is a wasteful number, since it uses less digits than its factorization.

121210120212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19575573 (or 19575570 counting only the distinct ones).

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

Adding to 121210120212102 its reverse (201212021012121), we get a palindrome (322422141224223).

The spelling of 121210120212102 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, two hundred twelve thousand, one hundred two".