21415372712311 has 2 divisors, whose sum is σ = 21415372712312. Its totient is φ = 21415372712310.

The previous prime is 21415372712303. The next prime is 21415372712333. The reversal of 21415372712311 is 11321727351412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21415372712311 - 2³ = 21415372712303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21415372712341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707686356155 + 10707686356156.

It is an arithmetic number, because the mean of its divisors is an integer number (10707686356156).

Almost surely, 2^{21415372712311} is an apocalyptic number.

21415372712311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21415372712311 is an equidigital number, since it uses as much as digits as its factorization.

21415372712311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The spelling of 21415372712311 in words is "twenty-one trillion, four hundred fifteen billion, three hundred seventy-two million, seven hundred twelve thousand, three hundred eleven".