122271521 has 2 divisors, whose sum is σ = 122271522. Its totient is φ = 122271520.

The previous prime is 122271503. The next prime is 122271547. The reversal of 122271521 is 125172221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105165025 + 17106496 = 10255^2 + 4136^2 .

It is a cyclic number.

It is not a de Polignac number, because 122271521 - 2¹⁴ = 122255137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122271551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61135760 + 61135761.

It is an arithmetic number, because the mean of its divisors is an integer number (61135761).

Almost surely, 2^122271521 is an apocalyptic number.

It is an amenable number.

122271521 is a deficient number, since it is larger than the sum of its proper divisors (1).

122271521 is an equidigital number, since it uses as much as digits as its factorization.

122271521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 23.

The square root of 122271521 is about 11057.6453641813. The cubic root of 122271521 is about 496.3352325859.

The spelling of 122271521 in words is "one hundred twenty-two million, two hundred seventy-one thousand, five hundred twenty-one".