222465164021 has 4 divisors (see below), whose sum is σ = 222536083692. Its totient is φ = 222394244352.

The previous prime is 222465163997. The next prime is 222465164027. The reversal of 222465164021 is 120461564222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178159123921 + 44306040100 = 422089^2 + 210490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222465164021 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 (222465164027) 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, 35455130 + ... + 35461403.

It is an arithmetic number, because the mean of its divisors is an integer number (55634020923).

Almost surely, 2^222465164021 is an apocalyptic number.

It is an amenable number.

222465164021 is a deficient number, since it is larger than the sum of its proper divisors (70919671).

222465164021 is an equidigital number, since it uses as much as digits as its factorization.

222465164021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70919670.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 222465164021 in words is "two hundred twenty-two billion, four hundred sixty-five million, one hundred sixty-four thousand, twenty-one".