222145155 has 48 divisors (see below), whose sum is σ = 407586816. Its totient is φ = 111693120.

The previous prime is 222145153. The next prime is 222145193. The reversal of 222145155 is 551541222.

It is not a de Polignac number, because 222145155 - 2¹ = 222145153 is a prime.

It is a super-3 number, since 3×222145155³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (222145153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71974 + ... + 74996.

It is an arithmetic number, because the mean of its divisors is an integer number (8491392).

Almost surely, 2^222145155 is an apocalyptic number.

222145155 is a deficient number, since it is larger than the sum of its proper divisors (185441661).

222145155 is a wasteful number, since it uses less digits than its factorization.

222145155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128 (or 3125 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 222145155 is about 14904.5347126302. The cubic root of 222145155 is about 605.6368359632.

Adding to 222145155 its reverse (551541222), we get a palindrome (773686377).

The spelling of 222145155 in words is "two hundred twenty-two million, one hundred forty-five thousand, one hundred fifty-five".