222115234401 has 8 divisors (see below), whose sum is σ = 329059606560. Its totient is φ = 148076822916.

The previous prime is 222115234361. The next prime is 222115234417. The reversal of 222115234401 is 104432511222.

222115234401 is a `hidden beast` number, since 2 + 2 + 21 + 1 + 5 + 234 + 401 = 666.

It is not a de Polignac number, because 222115234401 - 2⁶ = 222115234337 is a prime.

It is a super-2 number, since 2×222115234401² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8226490163 = 222115234401 / (2 + 2 + 2 + 1 + 1 + 5 + 2 + 3 + 4 + 4 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (222115234801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4113245055 + ... + 4113245108.

It is an arithmetic number, because the mean of its divisors is an integer number (41132450820).

Almost surely, 2^222115234401 is an apocalyptic number.

It is an amenable number.

222115234401 is a deficient number, since it is larger than the sum of its proper divisors (106944372159).

222115234401 is an equidigital number, since it uses as much as digits as its factorization.

222115234401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8226490172 (or 8226490166 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 222115234401 its reverse (104432511222), we get a palindrome (326547745623).

The spelling of 222115234401 in words is "two hundred twenty-two billion, one hundred fifteen million, two hundred thirty-four thousand, four hundred one".