2121010310320 has 80 divisors (see below), whose sum is σ = 5389489479168. Its totient is φ = 769866289920.

The previous prime is 2121010310249. The next prime is 2121010310323. The reversal of 2121010310320 is 230130101212.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2121010310294 and 2121010310303.

It is not an unprimeable number, because it can be changed into a prime (2121010310323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1721784 + ... + 2684503.

Almost surely, 2^{2121010310320} is an apocalyptic number.

2121010310320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121010310320 is an abundant number, since it is smaller than the sum of its proper divisors (3268479168848).

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

2121010310320 is a wasteful number, since it uses less digits than its factorization.

2121010310320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406858 (or 4406852 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121010310320 its reverse (230130101212), we get a palindrome (2351140411532).

The spelling of 2121010310320 in words is "two trillion, one hundred twenty-one billion, ten million, three hundred ten thousand, three hundred twenty".