121010021011100 has 288 divisors, whose sum is σ = 294198813779136. Its totient is φ = 42914362982400.

The previous prime is 121010021011093. The next prime is 121010021011261. The reversal of 121010021011100 is 1110120010121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2128293872 + ... + 2128350728.

Almost surely, 2^{121010021011100} is an apocalyptic number.

121010021011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121010021011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147099406889568).

121010021011100 is an abundant number, since it is smaller than the sum of its proper divisors (173188792768036).

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

121010021011100 is a wasteful number, since it uses less digits than its factorization.

121010021011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57545 (or 57538 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121010021011100 its reverse (1110120010121), we get a palindrome (122120141021221).

The spelling of 121010021011100 in words is "one hundred twenty-one trillion, ten billion, twenty-one million, eleven thousand, one hundred".