22130312 has 32 divisors (see below), whose sum is σ = 42687000. Its totient is φ = 10752000.

The previous prime is 22130293. The next prime is 22130321. The reversal of 22130312 is 21303122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19589476 + 2540836 = 4426^2 + 1594^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 49064 + ... + 49512.

Almost surely, 2^22130312 is an apocalyptic number.

It is an amenable number.

22130312 is a deficient number, since it is larger than the sum of its proper divisors (20556688).

22130312 is a wasteful number, since it uses less digits than its factorization.

22130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22130312 is about 4704.2865558977. The cubic root of 22130312 is about 280.7560857509.

Adding to 22130312 its reverse (21303122), we get a palindrome (43433434).

It can be divided in two parts, 2 and 2130312, that multiplied together give a palindrome (4260624).

The spelling of 22130312 in words is "twenty-two million, one hundred thirty thousand, three hundred twelve".