21214036274567 has 2 divisors, whose sum is σ = 21214036274568. Its totient is φ = 21214036274566.

The previous prime is 21214036274533. The next prime is 21214036274581. The reversal of 21214036274567 is 76547263041212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21214036274567 - 2⁸ = 21214036274311 is a prime.

It is a super-2 number, since 2×21214036274567² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214636274567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607018137283 + 10607018137284.

It is an arithmetic number, because the mean of its divisors is an integer number (10607018137284).

Almost surely, 2^{21214036274567} is an apocalyptic number.

21214036274567 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214036274567 is an equidigital number, since it uses as much as digits as its factorization.

21214036274567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 21214036274567 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, two hundred seventy-four thousand, five hundred sixty-seven".