2122574021 has 4 divisors (see below), whose sum is σ = 2214859872. Its totient is φ = 2030288172.

The previous prime is 2122573993. The next prime is 2122574053. The reversal of 2122574021 is 1204752212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122574021 - 2¹⁰ = 2122572997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122574071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46142891 + ... + 46142936.

It is an arithmetic number, because the mean of its divisors is an integer number (553714968).

Almost surely, 2^2122574021 is an apocalyptic number.

It is an amenable number.

2122574021 is a deficient number, since it is larger than the sum of its proper divisors (92285851).

2122574021 is an equidigital number, since it uses as much as digits as its factorization.

2122574021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92285850.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2122574021 is about 46071.4013353186. The cubic root of 2122574021 is about 1285.1513639216.

The spelling of 2122574021 in words is "two billion, one hundred twenty-two million, five hundred seventy-four thousand, twenty-one".