222115401 has 12 divisors (see below), whose sum is σ = 322498228. Its totient is φ = 147308544.

The previous prime is 222115381. The next prime is 222115429. The reversal of 222115401 is 104511222.

It can be written as a sum of positive squares in 2 ways, for example, as 128799801 + 93315600 = 11349^2 + 9660^2 .

It is not a de Polignac number, because 222115401 - 2⁶ = 222115337 is a prime.

It is a super-2 number, since 2×222115401² = 98670502722781602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222115441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62200 + ... + 65673.

Almost surely, 2^222115401 is an apocalyptic number.

It is an amenable number.

222115401 is a deficient number, since it is larger than the sum of its proper divisors (100382827).

222115401 is a wasteful number, since it uses less digits than its factorization.

222115401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128072 (or 128069 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 222115401 is about 14903.5365266101. The cubic root of 222115401 is about 605.6097952008.

Adding to 222115401 its reverse (104511222), we get a palindrome (326626623).

The spelling of 222115401 in words is "two hundred twenty-two million, one hundred fifteen thousand, four hundred one".