22213553453444 has 24 divisors (see below), whose sum is σ = 39460128798048. Its totient is φ = 10939283087040.

The previous prime is 22213553453431. The next prime is 22213553453471. The reversal of 22213553453444 is 44435435531222.

It is a super-2 number, since 2×22213553453444² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4810454 + ... + 8219949.

It is an arithmetic number, because the mean of its divisors is an integer number (1644172033252).

Almost surely, 2^{22213553453444} is an apocalyptic number.

It is an amenable number.

22213553453444 is a deficient number, since it is larger than the sum of its proper divisors (17246575344604).

22213553453444 is a wasteful number, since it uses less digits than its factorization.

22213553453444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13036835 (or 13036833 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 47.

Adding to 22213553453444 its reverse (44435435531222), we get a palindrome (66648988984666).

The spelling of 22213553453444 in words is "twenty-two trillion, two hundred thirteen billion, five hundred fifty-three million, four hundred fifty-three thousand, four hundred forty-four".