21232300097 has 2 divisors, whose sum is σ = 21232300098. Its totient is φ = 21232300096.

The previous prime is 21232300079. The next prime is 21232300129. The reversal of 21232300097 is 79000323212.

Together with previous prime (21232300079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16804196161 + 4428103936 = 129631^2 + 66544^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232300097 - 2²⁸ = 20963864641 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232302097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616150048 + 10616150049.

It is an arithmetic number, because the mean of its divisors is an integer number (10616150049).

Almost surely, 2^21232300097 is an apocalyptic number.

It is an amenable number.

21232300097 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232300097 is an equidigital number, since it uses as much as digits as its factorization.

21232300097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The spelling of 21232300097 in words is "twenty-one billion, two hundred thirty-two million, three hundred thousand, ninety-seven".