22152131 has 4 divisors (see below), whose sum is σ = 22280352. Its totient is φ = 22023912.

The previous prime is 22152121. The next prime is 22152149. The reversal of 22152131 is 13125122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22152131 - 2¹⁴ = 22135747 is a prime.

It is a super-2 number, since 2×22152131² = 981433815682322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (22152101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63851 + ... + 64196.

It is an arithmetic number, because the mean of its divisors is an integer number (5570088).

Almost surely, 2^22152131 is an apocalyptic number.

22152131 is a deficient number, since it is larger than the sum of its proper divisors (128221).

22152131 is a wasteful number, since it uses less digits than its factorization.

22152131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128220.

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

The square root of 22152131 is about 4706.6050397287. The cubic root of 22152131 is about 280.8483243198.

Adding to 22152131 its reverse (13125122), we get a palindrome (35277253).

The spelling of 22152131 in words is "twenty-two million, one hundred fifty-two thousand, one hundred thirty-one".