122572811 has 2 divisors, whose sum is σ = 122572812. Its totient is φ = 122572810.

The previous prime is 122572711. The next prime is 122572831. The reversal of 122572811 is 118275221.

It is a strong prime.

It is an emirp because it is prime and its reverse (118275221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122572811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122572831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61286405 + 61286406.

It is an arithmetic number, because the mean of its divisors is an integer number (61286406).

Almost surely, 2^122572811 is an apocalyptic number.

122572811 is a deficient number, since it is larger than the sum of its proper divisors (1).

122572811 is an equidigital number, since it uses as much as digits as its factorization.

122572811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 122572811 is about 11071.2605876657. The cubic root of 122572811 is about 496.7425724164.

The spelling of 122572811 in words is "one hundred twenty-two million, five hundred seventy-two thousand, eight hundred eleven".