2120231400 has 96 divisors (see below), whose sum is σ = 7511691840. Its totient is φ = 484623360.

The previous prime is 2120231389. The next prime is 2120231411. The reversal of 2120231400 is 41320212.

It is an interprime number because it is at equal distance from previous prime (2120231389) and next prime (2120231411).

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 2120231400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248209 + ... + 256608.

It is an arithmetic number, because the mean of its divisors is an integer number (78246790).

Almost surely, 2^2120231400 is an apocalyptic number.

2120231400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120231400 is an abundant number, since it is smaller than the sum of its proper divisors (5391460440).

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

2120231400 is a wasteful number, since it uses less digits than its factorization.

2120231400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504843 (or 504834 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2120231400 is about 46045.9705077437. The cubic root of 2120231400 is about 1284.6783955978.

Adding to 2120231400 its reverse (41320212), we get a palindrome (2161551612).

The spelling of 2120231400 in words is "two billion, one hundred twenty million, two hundred thirty-one thousand, four hundred".