22751121217444 has 12 divisors (see below), whose sum is σ = 39969382218444. Its totient is φ = 11331297726464.

The previous prime is 22751121217423. The next prime is 22751121217471. The reversal of 22751121217444 is 44471212115722.

It can be written as a sum of positive squares in 2 ways, for example, as 12624164302500 + 10126956914944 = 3553050^2 + 3182288^2 .

It is a super-3 number, since 3×22751121217444³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 22751121217444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11065719409 + ... + 11065721464.

It is an arithmetic number, because the mean of its divisors is an integer number (3330781851537).

Almost surely, 2^{22751121217444} is an apocalyptic number.

It is an amenable number.

22751121217444 is a deficient number, since it is larger than the sum of its proper divisors (17218261001000).

22751121217444 is a wasteful number, since it uses less digits than its factorization.

22751121217444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22131441134 (or 22131441132 counting only the distinct ones).

The product of its digits is 250880, while the sum is 43.

The spelling of 22751121217444 in words is "twenty-two trillion, seven hundred fifty-one billion, one hundred twenty-one million, two hundred seventeen thousand, four hundred forty-four".