2131102219977 has 16 divisors (see below), whose sum is σ = 3159567719680. Its totient is φ = 1419664152816.

The previous prime is 2131102219969. The next prime is 2131102219979. The reversal of 2131102219977 is 7799122011312.

2131102219977 is a `hidden beast` number, since 21 + 311 + 0 + 221 + 9 + 97 + 7 = 666.

It is not a de Polignac number, because 2131102219977 - 2³ = 2131102219969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131102219979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29704078 + ... + 29775735.

It is an arithmetic number, because the mean of its divisors is an integer number (197472982480).

Almost surely, 2^{2131102219977} is an apocalyptic number.

2131102219977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2131102219977 is a deficient number, since it is larger than the sum of its proper divisors (1028465499703).

2131102219977 is a wasteful number, since it uses less digits than its factorization.

2131102219977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59481149 (or 59481143 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The spelling of 2131102219977 in words is "two trillion, one hundred thirty-one billion, one hundred two million, two hundred nineteen thousand, nine hundred seventy-seven".