222451131 has 12 divisors (see below), whose sum is σ = 345026472. Its totient is φ = 127114848.

The previous prime is 222451129. The next prime is 222451157. The reversal of 222451131 is 131154222.

It is not a de Polignac number, because 222451131 - 2¹ = 222451129 is a prime.

It is a super-2 number, since 2×222451131² = 98969011366358322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 222451098 and 222451107.

It is not an unprimeable number, because it can be changed into a prime (222451111) 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, 756490 + ... + 756783.

It is an arithmetic number, because the mean of its divisors is an integer number (28752206).

Almost surely, 2^222451131 is an apocalyptic number.

222451131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222451131 is a deficient number, since it is larger than the sum of its proper divisors (122575341).

222451131 is a wasteful number, since it uses less digits than its factorization.

222451131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513290 (or 1513283 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 222451131 is about 14914.7957076187. The cubic root of 222451131 is about 605.9147703334.

The spelling of 222451131 in words is "two hundred twenty-two million, four hundred fifty-one thousand, one hundred thirty-one".