22431322421444 has 6 divisors (see below), whose sum is σ = 39254814237534. Its totient is φ = 11215661210720.

The previous prime is 22431322421437. The next prime is 22431322421467. The reversal of 22431322421444 is 44412422313422.

It can be written as a sum of positive squares in only one way, i.e., 16127356428544 + 6303965992900 = 4015888^2 + 2510770^2 .

It is a super-3 number, since 3×22431322421444³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22431322421398 and 22431322421407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803915302677 + ... + 2803915302684.

It is an arithmetic number, because the mean of its divisors is an integer number (6542469039589).

Almost surely, 2^{22431322421444} is an apocalyptic number.

It is an amenable number.

22431322421444 is a deficient number, since it is larger than the sum of its proper divisors (16823491816090).

22431322421444 is a wasteful number, since it uses less digits than its factorization.

22431322421444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607830605365 (or 5607830605363 counting only the distinct ones).

The product of its digits is 294912, while the sum is 38.

Adding to 22431322421444 its reverse (44412422313422), we get a palindrome (66843744734866).

The spelling of 22431322421444 in words is "twenty-two trillion, four hundred thirty-one billion, three hundred twenty-two million, four hundred twenty-one thousand, four hundred forty-four".