21196433243 has 2 divisors, whose sum is σ = 21196433244. Its totient is φ = 21196433242.

The previous prime is 21196433213. The next prime is 21196433273. The reversal of 21196433243 is 34233469112.

It is a balanced prime because it is at equal distance from previous prime (21196433213) and next prime (21196433273).

It is a cyclic number.

It is not a de Polignac number, because 21196433243 - 2²⁴ = 21179656027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 21196433197 and 21196433206.

It is not a weakly prime, because it can be changed into another prime (21196433213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10598216621 + 10598216622.

It is an arithmetic number, because the mean of its divisors is an integer number (10598216622).

Almost surely, 2^21196433243 is an apocalyptic number.

21196433243 is a deficient number, since it is larger than the sum of its proper divisors (1).

21196433243 is an equidigital number, since it uses as much as digits as its factorization.

21196433243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The spelling of 21196433243 in words is "twenty-one billion, one hundred ninety-six million, four hundred thirty-three thousand, two hundred forty-three".