22142230452 has 36 divisors (see below), whose sum is σ = 57900662820. Its totient is φ = 7126234752.

The previous prime is 22142230427. The next prime is 22142230459. The reversal of 22142230452 is 25403224122.

It can be written as a sum of positive squares in 2 ways, for example, as 4262261796 + 17879968656 = 65286^2 + 133716^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×22142230452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142230459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10603473 + ... + 10605560.

It is an arithmetic number, because the mean of its divisors is an integer number (1608351745).

Almost surely, 2^22142230452 is an apocalyptic number.

It is an amenable number.

22142230452 is an abundant number, since it is smaller than the sum of its proper divisors (35758432368).

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

22142230452 is a wasteful number, since it uses less digits than its factorization.

22142230452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21209072 (or 21209067 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 22142230452 its reverse (25403224122), we get a palindrome (47545454574).

The spelling of 22142230452 in words is "twenty-two billion, one hundred forty-two million, two hundred thirty thousand, four hundred fifty-two".