121202120212120 has 64 divisors (see below), whose sum is σ = 274875479445600. Its totient is φ = 48095183984640.

The previous prime is 121202120212109. The next prime is 121202120212211. The reversal of 121202120212120 is 21212021202121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12442402 + ... + 19930318.

Almost surely, 2^{121202120212120} is an apocalyptic number.

121202120212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202120212120 is an abundant number, since it is smaller than the sum of its proper divisors (153673359233480).

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

121202120212120 is a wasteful number, since it uses less digits than its factorization.

121202120212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491148 (or 7491144 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121202120212120 its reverse (21212021202121), we get a palindrome (142414141414241).

Subtracting from 121202120212120 its reverse (21212021202121), we obtain a palindrome (99990099009999).

The spelling of 121202120212120 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty".