21214026064139 has 2 divisors, whose sum is σ = 21214026064140. Its totient is φ = 21214026064138.

The previous prime is 21214026064123. The next prime is 21214026064177. The reversal of 21214026064139 is 93146062041212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214026064139 - 2⁴ = 21214026064123 is a prime.

It is a super-2 number, since 2×21214026064139² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21214026064096 and 21214026064105.

It is not a weakly prime, because it can be changed into another prime (21214026064639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607013032069 + 10607013032070.

It is an arithmetic number, because the mean of its divisors is an integer number (10607013032070).

Almost surely, 2^{21214026064139} is an apocalyptic number.

21214026064139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214026064139 is an equidigital number, since it uses as much as digits as its factorization.

21214026064139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 21214026064139 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, sixty-four thousand, one hundred thirty-nine".