21232097 has 2 divisors, whose sum is σ = 21232098. Its totient is φ = 21232096.

The previous prime is 21232091. The next prime is 21232103. The reversal of 21232097 is 79023212.

It is a balanced prime because it is at equal distance from previous prime (21232091) and next prime (21232103).

It can be written as a sum of positive squares in only one way, i.e., 20214016 + 1018081 = 4496^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232097 - 2⁶ = 21232033 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616048 + 10616049.

It is an arithmetic number, because the mean of its divisors is an integer number (10616049).

Almost surely, 2^21232097 is an apocalyptic number.

It is an amenable number.

21232097 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232097 is an equidigital number, since it uses as much as digits as its factorization.

21232097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 21232097 is about 4607.8299664810. The cubic root of 21232097 is about 276.9051054913.

The spelling of 21232097 in words is "twenty-one million, two hundred thirty-two thousand, ninety-seven".