121200021121102 has 96 divisors (see below), whose sum is σ = 242875820856960. Its totient is φ = 44730682920000.

The previous prime is 121200021121097. The next prime is 121200021121117. The reversal of 121200021121102 is 201121120002121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193467477 + ... + 194092927.

It is an arithmetic number, because the mean of its divisors is an integer number (2529956467260).

Almost surely, 2^{121200021121102} is an apocalyptic number.

121200021121102 is an abundant number, since it is smaller than the sum of its proper divisors (121675799735858).

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

121200021121102 is a wasteful number, since it uses less digits than its factorization.

121200021121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634958 (or 634951 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121200021121102 its reverse (201121120002121), we get a palindrome (322321141123223).

The spelling of 121200021121102 in words is "one hundred twenty-one trillion, two hundred billion, twenty-one million, one hundred twenty-one thousand, one hundred two".