21700624112501 has 2 divisors, whose sum is σ = 21700624112502. Its totient is φ = 21700624112500.

The previous prime is 21700624112459. The next prime is 21700624112527. The reversal of 21700624112501 is 10521142600712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18009422550001 + 3691201562500 = 4243751^2 + 1921250^2 .

It is a cyclic number.

It is not a de Polignac number, because 21700624112501 - 2¹⁴ = 21700624096117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21700624112561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850312056250 + 10850312056251.

It is an arithmetic number, because the mean of its divisors is an integer number (10850312056251).

Almost surely, 2^{21700624112501} is an apocalyptic number.

It is an amenable number.

21700624112501 is a deficient number, since it is larger than the sum of its proper divisors (1).

21700624112501 is an equidigital number, since it uses as much as digits as its factorization.

21700624112501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 21700624112501 in words is "twenty-one trillion, seven hundred billion, six hundred twenty-four million, one hundred twelve thousand, five hundred one".