2120970488877 has 72 divisors (see below), whose sum is σ = 3294512874240. Its totient is φ = 1347192453600.

The previous prime is 2120970488869. The next prime is 2120970488953. The reversal of 2120970488877 is 7788840790212.

2120970488877 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 9 + 70 + 488 + 87 + 7 = 666.

It is not a de Polignac number, because 2120970488877 - 2³ = 2120970488869 is a prime.

It is a super-2 number, since 2×2120970488877² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120970488837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2991495399 + ... + 2991496107.

Almost surely, 2^{2120970488877} is an apocalyptic number.

2120970488877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2120970488877 is a deficient number, since it is larger than the sum of its proper divisors (1173542385363).

2120970488877 is an frugal number, since it uses more digits than its factorization.

2120970488877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 63.

The spelling of 2120970488877 in words is "two trillion, one hundred twenty billion, nine hundred seventy million, four hundred eighty-eight thousand, eight hundred seventy-seven".