72222227 has 12 divisors (see below), whose sum is σ = 91651896. Its totient is φ = 56276640.

The previous prime is 72222193. The next prime is 72222229.

72222227 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 72222227 - 2¹⁴ = 72205843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72222196 and 72222205.

It is not an unprimeable number, because it can be changed into a prime (72222229) 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, 66458 + ... + 67535.

It is an arithmetic number, because the mean of its divisors is an integer number (7637658).

Almost surely, 2^72222227 is an apocalyptic number.

72222227 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

72222227 is a deficient number, since it is larger than the sum of its proper divisors (19429669).

72222227 is a wasteful number, since it uses less digits than its factorization.

72222227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134018 (or 134011 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 72222227 is about 8498.3661370878. The cubic root of 72222227 is about 416.4443350036. Note that the first 3 decimals are identical.

It can be divided in two parts, 7222 and 2227, that added together give a palindrome (9449).

The spelling of 72222227 in words is "seventy-two million, two hundred twenty-two thousand, two hundred twenty-seven".