22204431221012 has 6 divisors (see below), whose sum is σ = 38857754636778. Its totient is φ = 11102215610504.

The previous prime is 22204431220999. The next prime is 22204431221023. The reversal of 22204431221012 is 21012213440222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19405381763716 + 2799049457296 = 4405154^2 + 1673036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775553902623 + ... + 2775553902630.

It is an arithmetic number, because the mean of its divisors is an integer number (6476292439463).

Almost surely, 2^{22204431221012} is an apocalyptic number.

It is an amenable number.

22204431221012 is a deficient number, since it is larger than the sum of its proper divisors (16653323415766).

22204431221012 is a wasteful number, since it uses less digits than its factorization.

22204431221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551107805257 (or 5551107805255 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 22204431221012 its reverse (21012213440222), we get a palindrome (43216644661234).

The spelling of 22204431221012 in words is "twenty-two trillion, two hundred four billion, four hundred thirty-one million, two hundred twenty-one thousand, twelve".