121010121102100 has 36 divisors (see below), whose sum is σ = 262647562369024. Its totient is φ = 48393799670880.

The previous prime is 121010121102071. The next prime is 121010121102109. The reversal of 121010121102100 is 1201121010121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010121102109) 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, 127634964 + ... + 128579563.

Almost surely, 2^{121010121102100} is an apocalyptic number.

121010121102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010121102100 is an abundant number, since it is smaller than the sum of its proper divisors (141637441266924).

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

121010121102100 is a wasteful number, since it uses less digits than its factorization.

121010121102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256219264 (or 256219257 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121010121102100 its reverse (1201121010121), we get a palindrome (122211242112221).

The spelling of 121010121102100 in words is "one hundred twenty-one trillion, ten billion, one hundred twenty-one million, one hundred two thousand, one hundred".