22012002451 has 2 divisors, whose sum is σ = 22012002452. Its totient is φ = 22012002450.

The previous prime is 22012002401. The next prime is 22012002457. The reversal of 22012002451 is 15420021022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22012002451 - 2¹³ = 22011994259 is a prime.

It is not a weakly prime, because it can be changed into another prime (22012002457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006001225 + 11006001226.

It is an arithmetic number, because the mean of its divisors is an integer number (11006001226).

Almost surely, 2^22012002451 is an apocalyptic number.

22012002451 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012002451 is an equidigital number, since it uses as much as digits as its factorization.

22012002451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 22012002451 its reverse (15420021022), we get a palindrome (37432023473).

The spelling of 22012002451 in words is "twenty-two billion, twelve million, two thousand, four hundred fifty-one".