121333100221320 has 128 divisors (see below), whose sum is σ = 393384404649600. Its totient is φ = 29761073455104.

The previous prime is 121333100221303. The next prime is 121333100221327. The reversal of 121333100221320 is 23122001333121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (121333100221327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136974825 + ... + 137857784.

It is an arithmetic number, because the mean of its divisors is an integer number (3073315661325).

Almost surely, 2^{121333100221320} is an apocalyptic number.

121333100221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121333100221320 is an abundant number, since it is smaller than the sum of its proper divisors (272051304428280).

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

121333100221320 is a wasteful number, since it uses less digits than its factorization.

121333100221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274832919 (or 274832915 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 121333100221320 its reverse (23122001333121), we get a palindrome (144455101554441).

The spelling of 121333100221320 in words is "one hundred twenty-one trillion, three hundred thirty-three billion, one hundred million, two hundred twenty-one thousand, three hundred twenty".