2120011321200 has 120 divisors (see below), whose sum is σ = 6956739750576. Its totient is φ = 551547648000.

The previous prime is 2120011321177. The next prime is 2120011321223. The reversal of 2120011321200 is 21231100212.

It is an interprime number because it is at equal distance from previous prime (2120011321177) and next prime (2120011321223).

It is a tau number, because it is divible by the number of its divisors (120).

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 2120011321200.

It is a congruent number.

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, 21495631 + ... + 21594030.

Almost surely, 2^{2120011321200} is an apocalyptic number.

2120011321200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120011321200 is an abundant number, since it is smaller than the sum of its proper divisors (4836728429376).

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

2120011321200 is a wasteful number, since it uses less digits than its factorization.

2120011321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43089723 (or 43089712 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2120011321200 its reverse (21231100212), we get a palindrome (2141242421412).

The spelling of 2120011321200 in words is "two trillion, one hundred twenty billion, eleven million, three hundred twenty-one thousand, two hundred".