121333131220 has 48 divisors (see below), whose sum is σ = 291279945600. Its totient is φ = 41588440704.

The previous prime is 121333131217. The next prime is 121333131251. The reversal of 121333131220 is 22131333121.

121333131220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121333131191 and 121333131200.

It is a congruent number.

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, 396931 + ... + 632629.

It is an arithmetic number, because the mean of its divisors is an integer number (6068332200).

Almost surely, 2^121333131220 is an apocalyptic number.

121333131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121333131220 is an abundant number, since it is smaller than the sum of its proper divisors (169946814380).

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

121333131220 is a wasteful number, since it uses less digits than its factorization.

121333131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239392 (or 239390 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121333131220 its reverse (22131333121), we get a palindrome (143464464341).

The spelling of 121333131220 in words is "one hundred twenty-one billion, three hundred thirty-three million, one hundred thirty-one thousand, two hundred twenty".