2200656421 has 4 divisors (see below), whose sum is σ = 2201209632. Its totient is φ = 2200103212.

The previous prime is 2200656401. The next prime is 2200656449. The reversal of 2200656421 is 1246560022.

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 2200656421 - 2²¹ = 2198559269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2200656421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200656401) 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, 270595 + ... + 278608.

It is an arithmetic number, because the mean of its divisors is an integer number (550302408).

Almost surely, 2^2200656421 is an apocalyptic number.

It is an amenable number.

2200656421 is a deficient number, since it is larger than the sum of its proper divisors (553211).

2200656421 is an equidigital number, since it uses as much as digits as its factorization.

2200656421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553210.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2200656421 is about 46911.1545477192. The cubic root of 2200656421 is about 1300.7207878577.

The spelling of 2200656421 in words is "two billion, two hundred million, six hundred fifty-six thousand, four hundred twenty-one".