2120266531045 has 24 divisors (see below), whose sum is σ = 2776123275552. Its totient is φ = 1553783025600.

The previous prime is 2120266531021. The next prime is 2120266531049. The reversal of 2120266531045 is 5401356620212.

It is not a de Polignac number, because 2120266531045 - 2²⁵ = 2120232976613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120266530995 and 2120266531013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120266531049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9466371 + ... + 9687760.

It is an arithmetic number, because the mean of its divisors is an integer number (115671803148).

Almost surely, 2^{2120266531045} is an apocalyptic number.

It is an amenable number.

2120266531045 is a deficient number, since it is larger than the sum of its proper divisors (655856744507).

2120266531045 is a wasteful number, since it uses less digits than its factorization.

2120266531045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19154293 (or 19154280 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 2120266531045 in words is "two trillion, one hundred twenty billion, two hundred sixty-six million, five hundred thirty-one thousand, forty-five".