2120031121000 has 128 divisors (see below), whose sum is σ = 5656742451360. Its totient is φ = 736734720000.

The previous prime is 2120031120989. The next prime is 2120031121069. The reversal of 2120031121000 is 1211300212.

It can be written as a sum of positive squares in 16 ways, for example, as 47830564804 + 2072200556196 = 218702^2 + 1439514^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4575451 + ... + 5017450.

Almost surely, 2^{2120031121000} is an apocalyptic number.

2120031121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120031121000 is an abundant number, since it is smaller than the sum of its proper divisors (3536711330360).

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

2120031121000 is a wasteful number, since it uses less digits than its factorization.

2120031121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592952 (or 9592938 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2120031121000 its reverse (1211300212), we get a palindrome (2121242421212).

The spelling of 2120031121000 in words is "two trillion, one hundred twenty billion, thirty-one million, one hundred twenty-one thousand".