222815961101 has 4 divisors (see below), whose sum is σ = 222847223100. Its totient is φ = 222784699104.

The previous prime is 222815961089. The next prime is 222815961103. The reversal of 222815961101 is 101169518222.

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 145047484201 + 77768476900 = 380851^2 + 278870^2 .

It is a cyclic number.

It is not a de Polignac number, because 222815961101 - 2³⁰ = 221742219277 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 (222815961103) 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, 15620306 + ... + 15634563.

It is an arithmetic number, because the mean of its divisors is an integer number (55711805775).

Almost surely, 2^222815961101 is an apocalyptic number.

It is an amenable number.

222815961101 is a deficient number, since it is larger than the sum of its proper divisors (31261999).

222815961101 is an equidigital number, since it uses as much as digits as its factorization.

222815961101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31261998.

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 222815961101 in words is "two hundred twenty-two billion, eight hundred fifteen million, nine hundred sixty-one thousand, one hundred one".