2111020999971 has 32 divisors (see below), whose sum is σ = 3035785858560. Its totient is φ = 1297129939200.

The previous prime is 2111020999963. The next prime is 2111020999987. The reversal of 2111020999971 is 1799990201112.

It is not a de Polignac number, because 2111020999971 - 2³ = 2111020999963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111020998971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86366970 + ... + 86391408.

It is an arithmetic number, because the mean of its divisors is an integer number (94868308080).

Almost surely, 2^{2111020999971} is an apocalyptic number.

2111020999971 is a deficient number, since it is larger than the sum of its proper divisors (924764858589).

2111020999971 is a wasteful number, since it uses less digits than its factorization.

2111020999971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27707.

The product of its (nonzero) digits is 183708, while the sum is 51.

The spelling of 2111020999971 in words is "two trillion, one hundred eleven billion, twenty million, nine hundred ninety-nine thousand, nine hundred seventy-one".