22154401144 has 32 divisors (see below), whose sum is σ = 42503976000. Its totient is φ = 10822446720.

The previous prime is 22154401117. The next prime is 22154401169. The reversal of 22154401144 is 44110445122.

It is a happy number.

It is a congruent number.

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, 79632 + ... + 225055.

It is an arithmetic number, because the mean of its divisors is an integer number (1328249250).

Almost surely, 2^22154401144 is an apocalyptic number.

It is an amenable number.

22154401144 is a deficient number, since it is larger than the sum of its proper divisors (20349574856).

22154401144 is a wasteful number, since it uses less digits than its factorization.

22154401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304903 (or 304899 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 22154401144 its reverse (44110445122), we get a palindrome (66264846266).

The spelling of 22154401144 in words is "twenty-two billion, one hundred fifty-four million, four hundred one thousand, one hundred forty-four".