22231151 has 2 divisors, whose sum is σ = 22231152. Its totient is φ = 22231150.

The previous prime is 22231147. The next prime is 22231169. The reversal of 22231151 is 15113222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22231151 - 2² = 22231147 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22231051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115575 + 11115576.

It is an arithmetic number, because the mean of its divisors is an integer number (11115576).

Almost surely, 2^22231151 is an apocalyptic number.

22231151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231151 is an equidigital number, since it uses as much as digits as its factorization.

22231151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 22231151 is about 4714.9921526976. The cubic root of 22231151 is about 281.1818708395.

Adding to 22231151 its reverse (15113222), we get a palindrome (37344373).

The spelling of 22231151 in words is "twenty-two million, two hundred thirty-one thousand, one hundred fifty-one".