21223113139 has 2 divisors, whose sum is σ = 21223113140. Its totient is φ = 21223113138.

The previous prime is 21223113103. The next prime is 21223113151. The reversal of 21223113139 is 93131132212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223113139 - 2⁷ = 21223113011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21223113179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611556569 + 10611556570.

It is an arithmetic number, because the mean of its divisors is an integer number (10611556570).

Almost surely, 2^21223113139 is an apocalyptic number.

21223113139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223113139 is an equidigital number, since it uses as much as digits as its factorization.

21223113139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The spelling of 21223113139 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred thirty-nine".