666000224421 has 32 divisors (see below), whose sum is σ = 1040714956800. Its totient is φ = 370995461760.

The previous prime is 666000224411. The next prime is 666000224497. The reversal of 666000224421 is 124422000666.

It is not a de Polignac number, because 666000224421 - 2⁵ = 666000224389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666000224401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2376741 + ... + 2642138.

It is an arithmetic number, because the mean of its divisors is an integer number (32522342400).

Almost surely, 2^666000224421 is an apocalyptic number.

It is an amenable number.

666000224421 is a deficient number, since it is larger than the sum of its proper divisors (374714732379).

666000224421 is a wasteful number, since it uses less digits than its factorization.

666000224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019049.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 666000224421 in words is "six hundred sixty-six billion, two hundred twenty-four thousand, four hundred twenty-one".