22154131 has 2 divisors, whose sum is σ = 22154132. Its totient is φ = 22154130.

The previous prime is 22154081. The next prime is 22154137. The reversal of 22154131 is 13145122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22154131 - 2⁷ = 22154003 is a prime.

It is a super-2 number, since 2×22154131² = 981611040730322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22154099 and 22154108.

It is not a weakly prime, because it can be changed into another prime (22154137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077065 + 11077066.

It is an arithmetic number, because the mean of its divisors is an integer number (11077066).

Almost surely, 2^22154131 is an apocalyptic number.

22154131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22154131 is an equidigital number, since it uses as much as digits as its factorization.

22154131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 22154131 is about 4706.8175023045. The cubic root of 22154131 is about 280.8567761740.

Adding to 22154131 its reverse (13145122), we get a palindrome (35299253).

Subtracting from 22154131 its reverse (13145122), we obtain a palindrome (9009009).

The spelling of 22154131 in words is "twenty-two million, one hundred fifty-four thousand, one hundred thirty-one".