121210221120 has 112 divisors (see below), whose sum is σ = 384931968768. Its totient is φ = 32315207680.

The previous prime is 121210221103. The next prime is 121210221131. The reversal of 121210221120 is 21122012121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121210221120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5009692 + ... + 5033828.

Almost surely, 2^121210221120 is an apocalyptic number.

121210221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210221120 is an abundant number, since it is smaller than the sum of its proper divisors (263721747648).

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

121210221120 is a wasteful number, since it uses less digits than its factorization.

121210221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29388 (or 29378 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210221120 its reverse (21122012121), we get a palindrome (142332233241).

The spelling of 121210221120 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty".