22142021052 has 12 divisors (see below), whose sum is σ = 51664715816. Its totient is φ = 7380673680.

The previous prime is 22142021023. The next prime is 22142021063. The reversal of 22142021052 is 25012024122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22142021052² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 922584199 + ... + 922584222.

Almost surely, 2^22142021052 is an apocalyptic number.

It is an amenable number.

22142021052 is an abundant number, since it is smaller than the sum of its proper divisors (29522694764).

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

22142021052 is a wasteful number, since it uses less digits than its factorization.

22142021052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845168428 (or 1845168426 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 22142021052 its reverse (25012024122), we get a palindrome (47154045174).

The spelling of 22142021052 in words is "twenty-two billion, one hundred forty-two million, twenty-one thousand, fifty-two".