22143212112012 has 48 divisors (see below), whose sum is σ = 52767478632960. Its totient is φ = 7223934194752.

The previous prime is 22143212111957. The next prime is 22143212112013. The reversal of 22143212112012 is 21021121234122.

It is not an unprimeable number, because it can be changed into a prime (22143212112013) 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 in 15 ways as a sum of consecutive naturals, for example, 54380518 + ... + 54786194.

It is an arithmetic number, because the mean of its divisors is an integer number (1099322471520).

Almost surely, 2^{22143212112012} is an apocalyptic number.

It is an amenable number.

22143212112012 is an abundant number, since it is smaller than the sum of its proper divisors (30624266520948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22143212112012 is a wasteful number, since it uses less digits than its factorization.

22143212112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502510 (or 502508 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 22143212112012 its reverse (21021121234122), we get a palindrome (43164333346134).

The spelling of 22143212112012 in words is "twenty-two trillion, one hundred forty-three billion, two hundred twelve million, one hundred twelve thousand, twelve".