222215155 has 8 divisors (see below), whose sum is σ = 273865392. Its totient is φ = 172967328.

The previous prime is 222215113. The next prime is 222215159. The reversal of 222215155 is 551512222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222215155 - 2⁷ = 222215027 is a prime.

It is a super-2 number, since 2×222215155² = 98759150223348050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222215159) 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, 600397 + ... + 600766.

It is an arithmetic number, because the mean of its divisors is an integer number (34233174).

Almost surely, 2^222215155 is an apocalyptic number.

222215155 is a deficient number, since it is larger than the sum of its proper divisors (51650237).

222215155 is a wasteful number, since it uses less digits than its factorization.

222215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201205.

The product of its digits is 2000, while the sum is 25.

The square root of 222215155 is about 14906.8828062744. The cubic root of 222215155 is about 605.7004432118.

Adding to 222215155 its reverse (551512222), we get a palindrome (773727377).

The spelling of 222215155 in words is "two hundred twenty-two million, two hundred fifteen thousand, one hundred fifty-five".