21012302230197 has 48 divisors (see below), whose sum is σ = 28575086346240. Its totient is φ = 13731840259488.

The previous prime is 21012302230193. The next prime is 21012302230211. The reversal of 21012302230197 is 79103220321012.

It is a happy number.

It is not a de Polignac number, because 21012302230197 - 2² = 21012302230193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012302230193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11526220828 + ... + 11526222650.

It is an arithmetic number, because the mean of its divisors is an integer number (595314298880).

Almost surely, 2^{21012302230197} is an apocalyptic number.

It is an amenable number.

21012302230197 is a deficient number, since it is larger than the sum of its proper divisors (7562784116043).

21012302230197 is an equidigital number, since it uses as much as digits as its factorization.

21012302230197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The spelling of 21012302230197 in words is "twenty-one trillion, twelve billion, three hundred two million, two hundred thirty thousand, one hundred ninety-seven".