21230196037807 has 2 divisors, whose sum is σ = 21230196037808. Its totient is φ = 21230196037806.

The previous prime is 21230196037753. The next prime is 21230196037829. The reversal of 21230196037807 is 70873069103212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21230196037807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230196037877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615098018903 + 10615098018904.

It is an arithmetic number, because the mean of its divisors is an integer number (10615098018904).

Almost surely, 2^{21230196037807} is an apocalyptic number.

21230196037807 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230196037807 is an equidigital number, since it uses as much as digits as its factorization.

21230196037807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 21230196037807 in words is "twenty-one trillion, two hundred thirty billion, one hundred ninety-six million, thirty-seven thousand, eight hundred seven".