122970181 has 2 divisors, whose sum is σ = 122970182. Its totient is φ = 122970180.

The previous prime is 122970157. The next prime is 122970187. The reversal of 122970181 is 181079221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121749156 + 1221025 = 11034^2 + 1105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122970181 is a prime.

It is a super-2 number, since 2×122970181² = 30243330830345522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122970187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61485090 + 61485091.

It is an arithmetic number, because the mean of its divisors is an integer number (61485091).

Almost surely, 2^122970181 is an apocalyptic number.

It is an amenable number.

122970181 is a deficient number, since it is larger than the sum of its proper divisors (1).

122970181 is an equidigital number, since it uses as much as digits as its factorization.

122970181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 122970181 is about 11089.1920805801. The cubic root of 122970181 is about 497.2787915835.

The spelling of 122970181 in words is "one hundred twenty-two million, nine hundred seventy thousand, one hundred eighty-one".