123021697 has 2 divisors, whose sum is σ = 123021698. Its totient is φ = 123021696.

The previous prime is 123021649. The next prime is 123021709. The reversal of 123021697 is 796120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 2702736 = 10969^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 123021697 - 2¹¹ = 123019649 is a prime.

It is not a weakly prime, because it can be changed into another prime (123021097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510848 + 61510849.

It is an arithmetic number, because the mean of its divisors is an integer number (61510849).

Almost surely, 2^123021697 is an apocalyptic number.

It is an amenable number.

123021697 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021697 is an equidigital number, since it uses as much as digits as its factorization.

123021697 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 31.

The square root of 123021697 is about 11091.5146395792. The cubic root of 123021697 is about 497.3482236943.

The spelling of 123021697 in words is "one hundred twenty-three million, twenty-one thousand, six hundred ninety-seven".