22142252142145 has 12 divisors (see below), whose sum is σ = 27308238515964. Its totient is φ = 17235050310720.

The previous prime is 22142252142137. The next prime is 22142252142161. The reversal of 22142252142145 is 54124125224122.

It can be written as a sum of positive squares in 6 ways, for example, as 8270731788544 + 13871520353601 = 2875888^2 + 3724449^2 .

It is not a de Polignac number, because 22142252142145 - 2³ = 22142252142137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1617396526 + ... + 1617410215.

It is an arithmetic number, because the mean of its divisors is an integer number (2275686542997).

Almost surely, 2^{22142252142145} is an apocalyptic number.

It is an amenable number.

22142252142145 is a deficient number, since it is larger than the sum of its proper divisors (5165986373819).

22142252142145 is an equidigital number, since it uses as much as digits as its factorization.

22142252142145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234806820 (or 3234806783 counting only the distinct ones).

The product of its digits is 102400, while the sum is 37.

Adding to 22142252142145 its reverse (54124125224122), we get a palindrome (76266377366267).

The spelling of 22142252142145 in words is "twenty-two trillion, one hundred forty-two billion, two hundred fifty-two million, one hundred forty-two thousand, one hundred forty-five".