2113617021 has 8 divisors (see below), whose sum is σ = 2983929984. Its totient is φ = 1326191040.

The previous prime is 2113617007. The next prime is 2113617043. The reversal of 2113617021 is 1207163112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2113617021 - 2¹⁰ = 2113615997 is a prime.

It is a super-2 number, since 2×2113617021² = 8934753822921828882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113616982 and 2113617000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113617061) 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 7 ways as a sum of consecutive naturals, for example, 20721685 + ... + 20721786.

It is an arithmetic number, because the mean of its divisors is an integer number (372991248).

Almost surely, 2^2113617021 is an apocalyptic number.

It is an amenable number.

2113617021 is a deficient number, since it is larger than the sum of its proper divisors (870312963).

2113617021 is a wasteful number, since it uses less digits than its factorization.

2113617021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41443491.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 2113617021 is about 45974.0907577301. The cubic root of 2113617021 is about 1283.3410885159.

The spelling of 2113617021 in words is "two billion, one hundred thirteen million, six hundred seventeen thousand, twenty-one".