201121120120 has 32 divisors (see below), whose sum is σ = 453628969200. Its totient is φ = 80251746048.

The previous prime is 201121120099. The next prime is 201121120141. The reversal of 201121120120 is 21021121102.

It is an interprime number because it is at equal distance from previous prime (201121120099) and next prime (201121120141).

It is a self number, because there is not a number n which added to its sum of digits gives 201121120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6130374 + ... + 6163093.

Almost surely, 2^201121120120 is an apocalyptic number.

201121120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121120120 is an abundant number, since it is smaller than the sum of its proper divisors (252507849080).

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

201121120120 is a wasteful number, since it uses less digits than its factorization.

201121120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293887 (or 12293883 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201121120120 its reverse (21021121102), we get a palindrome (222142241222).

The spelling of 201121120120 in words is "two hundred one billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty".