22151454531 has 8 divisors (see below), whose sum is σ = 29593992960. Its totient is φ = 14738276232.

The previous prime is 22151454527. The next prime is 22151454547. The reversal of 22151454531 is 13545415122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22151454531 - 2² = 22151454527 is a prime.

It is a super-2 number, since 2×22151454531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22151454492 and 22151454501.

It is not an unprimeable number, because it can be changed into a prime (22151453531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7338271 + ... + 7341288.

It is an arithmetic number, because the mean of its divisors is an integer number (3699249120).

Almost surely, 2^22151454531 is an apocalyptic number.

22151454531 is a deficient number, since it is larger than the sum of its proper divisors (7442538429).

22151454531 is a wasteful number, since it uses less digits than its factorization.

22151454531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680065.

The product of its digits is 24000, while the sum is 33.

Adding to 22151454531 its reverse (13545415122), we get a palindrome (35696869653).

The spelling of 22151454531 in words is "twenty-two billion, one hundred fifty-one million, four hundred fifty-four thousand, five hundred thirty-one".