121120202100 has 72 divisors (see below), whose sum is σ = 350581346080. Its totient is φ = 32285796480.

The previous prime is 121120202059. The next prime is 121120202113. The reversal of 121120202100 is 1202021121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 682194 + ... + 841206.

Almost surely, 2^121120202100 is an apocalyptic number.

121120202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120202100 is an abundant number, since it is smaller than the sum of its proper divisors (229461143980).

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

121120202100 is a wasteful number, since it uses less digits than its factorization.

121120202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161569 (or 161562 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121120202100 its reverse (1202021121), we get a palindrome (122322223221).

The spelling of 121120202100 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred two thousand, one hundred".