22232031212 has 6 divisors (see below), whose sum is σ = 38906054628. Its totient is φ = 11116015604.

The previous prime is 22232031193. The next prime is 22232031281. The reversal of 22232031212 is 21213023222.

It is a happy number.

It is a super-2 number, since 2×22232031212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2779003898 + ... + 2779003905.

It is an arithmetic number, because the mean of its divisors is an integer number (6484342438).

Almost surely, 2^22232031212 is an apocalyptic number.

It is an amenable number.

22232031212 is a deficient number, since it is larger than the sum of its proper divisors (16674023416).

22232031212 is a wasteful number, since it uses less digits than its factorization.

22232031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558007807 (or 5558007805 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22232031212 its reverse (21213023222), we get a palindrome (43445054434).

The spelling of 22232031212 in words is "twenty-two billion, two hundred thirty-two million, thirty-one thousand, two hundred twelve".