122452021 has 2 divisors, whose sum is σ = 122452022. Its totient is φ = 122452020.

The previous prime is 122452013. The next prime is 122452049. The reversal of 122452021 is 120254221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67469796 + 54982225 = 8214^2 + 7415^2 .

It is a cyclic number.

It is not a de Polignac number, because 122452021 - 2³ = 122452013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122452021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122450021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61226010 + 61226011.

It is an arithmetic number, because the mean of its divisors is an integer number (61226011).

Almost surely, 2^122452021 is an apocalyptic number.

It is an amenable number.

122452021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122452021 is an equidigital number, since it uses as much as digits as its factorization.

122452021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 122452021 is about 11065.8041280334. The cubic root of 122452021 is about 496.5793462892.

The spelling of 122452021 in words is "one hundred twenty-two million, four hundred fifty-two thousand, twenty-one".