21422001131 has 2 divisors, whose sum is σ = 21422001132. Its totient is φ = 21422001130.

The previous prime is 21422001113. The next prime is 21422001137. The reversal of 21422001131 is 13110022412.

Together with previous prime (21422001113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21422001131 - 2⁶ = 21422001067 is a prime.

It is a super-2 number, since 2×21422001131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21422001137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711000565 + 10711000566.

It is an arithmetic number, because the mean of its divisors is an integer number (10711000566).

Almost surely, 2^21422001131 is an apocalyptic number.

21422001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422001131 is an equidigital number, since it uses as much as digits as its factorization.

21422001131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21422001131 its reverse (13110022412), we get a palindrome (34532023543).

The spelling of 21422001131 in words is "twenty-one billion, four hundred twenty-two million, one thousand, one hundred thirty-one".