22212122252 has 24 divisors (see below), whose sum is σ = 38952410112. Its totient is φ = 11082890000.

The previous prime is 22212122249. The next prime is 22212122287. The reversal of 22212122252 is 25222121222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4672877 + ... + 4677627.

It is an arithmetic number, because the mean of its divisors is an integer number (1623017088).

Almost surely, 2^22212122252 is an apocalyptic number.

It is an amenable number.

22212122252 is a deficient number, since it is larger than the sum of its proper divisors (16740287860).

22212122252 is a wasteful number, since it uses less digits than its factorization.

22212122252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949 (or 6947 counting only the distinct ones).

The product of its digits is 1280, while the sum is 23.

Adding to 22212122252 its reverse (25222121222), we get a palindrome (47434243474).

The spelling of 22212122252 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred fifty-two".