2112670621 has 2 divisors, whose sum is σ = 2112670622. Its totient is φ = 2112670620.

The previous prime is 2112670607. The next prime is 2112670639. The reversal of 2112670621 is 1260762112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972603396 + 140067225 = 44414^2 + 11835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112670621 - 2⁷ = 2112670493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112670621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112670601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056335310 + 1056335311.

It is an arithmetic number, because the mean of its divisors is an integer number (1056335311).

Almost surely, 2^2112670621 is an apocalyptic number.

It is an amenable number.

2112670621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112670621 is an equidigital number, since it uses as much as digits as its factorization.

2112670621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2112670621 is about 45963.7968514352. The cubic root of 2112670621 is about 1283.1495155998.

The spelling of 2112670621 in words is "two billion, one hundred twelve million, six hundred seventy thousand, six hundred twenty-one".