121020010100 has 36 divisors (see below), whose sum is σ = 286487371968. Its totient is φ = 44007276000.

The previous prime is 121020010093. The next prime is 121020010103. The reversal of 121020010100 is 1010020121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020010103) 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, 55007996 + ... + 55010195.

Almost surely, 2^121020010100 is an apocalyptic number.

121020010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020010100 is an abundant number, since it is smaller than the sum of its proper divisors (165467361868).

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

121020010100 is a wasteful number, since it uses less digits than its factorization.

121020010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110018216 (or 110018209 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121020010100 its reverse (1010020121), we get a palindrome (122030030221).

The spelling of 121020010100 in words is "one hundred twenty-one billion, twenty million, ten thousand, one hundred".