222144154 has 4 divisors (see below), whose sum is σ = 333216234. Its totient is φ = 111072076.

The previous prime is 222144133. The next prime is 222144157. The reversal of 222144154 is 451441222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 221325129 + 819025 = 14877^2 + 905^2 .

It is not an unprimeable number, because it can be changed into a prime (222144157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55536037 + ... + 55536040.

Almost surely, 2^222144154 is an apocalyptic number.

222144154 is a deficient number, since it is larger than the sum of its proper divisors (111072080).

222144154 is a wasteful number, since it uses less digits than its factorization.

222144154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111072079.

The product of its digits is 2560, while the sum is 25.

The square root of 222144154 is about 14904.5011322084. The cubic root of 222144154 is about 605.6359262826.

Adding to 222144154 its reverse (451441222), we get a palindrome (673585376).

The spelling of 222144154 in words is "two hundred twenty-two million, one hundred forty-four thousand, one hundred fifty-four".