22153421245 has 4 divisors (see below), whose sum is σ = 26584105500. Its totient is φ = 17722736992.

The previous prime is 22153421243. The next prime is 22153421287. The reversal of 22153421245 is 54212435122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8309780964 + 13843640281 = 91158^2 + 117659^2 .

It is a cyclic number.

It is not a de Polignac number, because 22153421245 - 2¹ = 22153421243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153421243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215342120 + ... + 2215342129.

It is an arithmetic number, because the mean of its divisors is an integer number (6646026375).

Almost surely, 2^22153421245 is an apocalyptic number.

It is an amenable number.

22153421245 is a deficient number, since it is larger than the sum of its proper divisors (4430684255).

22153421245 is an equidigital number, since it uses as much as digits as its factorization.

22153421245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430684254.

The product of its digits is 19200, while the sum is 31.

Adding to 22153421245 its reverse (54212435122), we get a palindrome (76365856367).

The spelling of 22153421245 in words is "twenty-two billion, one hundred fifty-three million, four hundred twenty-one thousand, two hundred forty-five".