121311333320 has 32 divisors (see below), whose sum is σ = 274152945600. Its totient is φ = 48310765248.

The previous prime is 121311333281. The next prime is 121311333329. The reversal of 121311333320 is 23333113121.

It is a super-2 number, since 2×121311333320² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121311333329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6671060 + ... + 6689219.

It is an arithmetic number, because the mean of its divisors is an integer number (8567279550).

Almost surely, 2^121311333320 is an apocalyptic number.

121311333320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121311333320 is an abundant number, since it is smaller than the sum of its proper divisors (152841612280).

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

121311333320 is a wasteful number, since it uses less digits than its factorization.

121311333320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13360517 (or 13360513 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 121311333320 its reverse (23333113121), we get a palindrome (144644446441).

The spelling of 121311333320 in words is "one hundred twenty-one billion, three hundred eleven million, three hundred thirty-three thousand, three hundred twenty".