22221421153 has 2 divisors, whose sum is σ = 22221421154. Its totient is φ = 22221421152.

The previous prime is 22221421109. The next prime is 22221421231. The reversal of 22221421153 is 35112412222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19696157649 + 2525263504 = 140343^2 + 50252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221421153 is a prime.

It is a super-5 number, since 5×22221421153⁵ (a number of 53 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (22221427153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110710576 + 11110710577.

It is an arithmetic number, because the mean of its divisors is an integer number (11110710577).

Almost surely, 2^22221421153 is an apocalyptic number.

It is an amenable number.

22221421153 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221421153 is an equidigital number, since it uses as much as digits as its factorization.

22221421153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

Adding to 22221421153 its reverse (35112412222), we get a palindrome (57333833375).

The spelling of 22221421153 in words is "twenty-two billion, two hundred twenty-one million, four hundred twenty-one thousand, one hundred fifty-three".