22215100403444 has 24 divisors (see below), whose sum is σ = 42998458372968. Its totient is φ = 9976011822720.

The previous prime is 22215100403413. The next prime is 22215100403449. The reversal of 22215100403444 is 44430400151222.

It can be written as a sum of positive squares in 4 ways, for example, as 9491254700944 + 12723845702500 = 3080788^2 + 3567050^2 .

It is a super-2 number, since 2×22215100403444² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22215100403444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215100403449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5773153067 + ... + 5773156914.

It is an arithmetic number, because the mean of its divisors is an integer number (1791602432207).

Almost surely, 2^{22215100403444} is an apocalyptic number.

It is an amenable number.

22215100403444 is a deficient number, since it is larger than the sum of its proper divisors (20783357969524).

22215100403444 is a wasteful number, since it uses less digits than its factorization.

22215100403444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11546310035 (or 11546310033 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 22215100403444 its reverse (44430400151222), we get a palindrome (66645500554666).

The spelling of 22215100403444 in words is "twenty-two trillion, two hundred fifteen billion, one hundred million, four hundred three thousand, four hundred forty-four".