22267212712 has 8 divisors (see below), whose sum is σ = 41751023850. Its totient is φ = 11133606352.

The previous prime is 22267212691. The next prime is 22267212719. The reversal of 22267212712 is 21721276222.

It can be written as a sum of positive squares in only one way, i.e., 21177816676 + 1089396036 = 145526^2 + 33006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22267212712² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22267212719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391700787 + ... + 1391700802.

Almost surely, 2^22267212712 is an apocalyptic number.

It is an amenable number.

22267212712 is a deficient number, since it is larger than the sum of its proper divisors (19483811138).

22267212712 is a wasteful number, since it uses less digits than its factorization.

22267212712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783401595 (or 2783401591 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

Adding to 22267212712 its reverse (21721276222), we get a palindrome (43988488934).

The spelling of 22267212712 in words is "twenty-two billion, two hundred sixty-seven million, two hundred twelve thousand, seven hundred twelve".