22121403455 has 16 divisors (see below), whose sum is σ = 27024192000. Its totient is φ = 17380788480.

The previous prime is 22121403413. The next prime is 22121403457. The reversal of 22121403455 is 55430412122.

It is not a de Polignac number, because 22121403455 - 2²⁸ = 21852967999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121403457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100511 + ... + 233120.

It is an arithmetic number, because the mean of its divisors is an integer number (1689012000).

Almost surely, 2^22121403455 is an apocalyptic number.

22121403455 is a deficient number, since it is larger than the sum of its proper divisors (4902788545).

22121403455 is a wasteful number, since it uses less digits than its factorization.

22121403455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333874.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 22121403455 its reverse (55430412122), we get a palindrome (77551815577).

The spelling of 22121403455 in words is "twenty-two billion, one hundred twenty-one million, four hundred three thousand, four hundred fifty-five".