22400121004 has 12 divisors (see below), whose sum is σ = 39203425800. Its totient is φ = 11199142208.

The previous prime is 22400121001. The next prime is 22400121011. The reversal of 22400121004 is 40012100422.

It is not an unprimeable number, because it can be changed into a prime (22400121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173149 + ... + 273460.

It is an arithmetic number, because the mean of its divisors is an integer number (3266952150).

Almost surely, 2^22400121004 is an apocalyptic number.

It is an amenable number.

22400121004 is a deficient number, since it is larger than the sum of its proper divisors (16803304796).

22400121004 is a wasteful number, since it uses less digits than its factorization.

22400121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459152 (or 459150 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22400121004 its reverse (40012100422), we get a palindrome (62412221426).

It can be divided in two parts, 22 and 400121004, that multiplied together give a palindrome (8802662088).

The spelling of 22400121004 in words is "twenty-two billion, four hundred million, one hundred twenty-one thousand, four".