2111676021 has 96 divisors (see below), whose sum is σ = 3987446400. Its totient is φ = 1094446080.

The previous prime is 2111676001. The next prime is 2111676043. The reversal of 2111676021 is 1206761112.

It is a happy number.

It is not a de Polignac number, because 2111676021 - 2⁹ = 2111675509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111676001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1013701 + ... + 1015781.

It is an arithmetic number, because the mean of its divisors is an integer number (41535900).

Almost surely, 2^2111676021 is an apocalyptic number.

2111676021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2111676021 is a deficient number, since it is larger than the sum of its proper divisors (1875770379).

2111676021 is a wasteful number, since it uses less digits than its factorization.

2111676021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 2111676021 is about 45952.9761930607. The cubic root of 2111676021 is about 1282.9481242392.

The spelling of 2111676021 in words is "two billion, one hundred eleven million, six hundred seventy-six thousand, twenty-one".