2200021957 has 4 divisors (see below), whose sum is σ = 2514310816. Its totient is φ = 1885733100.

The previous prime is 2200021937. The next prime is 2200021963. The reversal of 2200021957 is 7591200022.

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 2200021957 - 2¹⁹ = 2199497669 is a prime.

It is a super-2 number, since 2×2200021957² = 9680193222564219698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200021927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157144419 + ... + 157144432.

It is an arithmetic number, because the mean of its divisors is an integer number (628577704).

Almost surely, 2^2200021957 is an apocalyptic number.

It is an amenable number.

2200021957 is a deficient number, since it is larger than the sum of its proper divisors (314288859).

2200021957 is an equidigital number, since it uses as much as digits as its factorization.

2200021957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314288858.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2200021957 is about 46904.3916600567. The cubic root of 2200021957 is about 1300.5957736683.

Adding to 2200021957 its reverse (7591200022), we get a palindrome (9791221979).

The spelling of 2200021957 in words is "two billion, two hundred million, twenty-one thousand, nine hundred fifty-seven".