21740912701 has 2 divisors, whose sum is σ = 21740912702. Its totient is φ = 21740912700.

The previous prime is 21740912693. The next prime is 21740912719. The reversal of 21740912701 is 10721904712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14793856900 + 6947055801 = 121630^2 + 83349^2 .

It is a cyclic number.

It is not a de Polignac number, because 21740912701 - 2³ = 21740912693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21740912731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10870456350 + 10870456351.

It is an arithmetic number, because the mean of its divisors is an integer number (10870456351).

Almost surely, 2^21740912701 is an apocalyptic number.

It is an amenable number.

21740912701 is a deficient number, since it is larger than the sum of its proper divisors (1).

21740912701 is an equidigital number, since it uses as much as digits as its factorization.

21740912701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 21740912701 in words is "twenty-one billion, seven hundred forty million, nine hundred twelve thousand, seven hundred one".