21310201079 has 2 divisors, whose sum is σ = 21310201080. Its totient is φ = 21310201078.

The previous prime is 21310201057. The next prime is 21310201141. The reversal of 21310201079 is 97010201312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21310201079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21310201039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655100539 + 10655100540.

It is an arithmetic number, because the mean of its divisors is an integer number (10655100540).

Almost surely, 2^21310201079 is an apocalyptic number.

21310201079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310201079 is an equidigital number, since it uses as much as digits as its factorization.

21310201079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 21310201079 in words is "twenty-one billion, three hundred ten million, two hundred one thousand, seventy-nine".