122543081 has 2 divisors, whose sum is σ = 122543082. Its totient is φ = 122543080.

The previous prime is 122543063. The next prime is 122543119. The reversal of 122543081 is 180345221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119683600 + 2859481 = 10940^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 122543081 - 2¹⁸ = 122280937 is a prime.

It is a super-2 number, since 2×122543081² = 30033613401945122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122543081.

It is not a weakly prime, because it can be changed into another prime (122549081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61271540 + 61271541.

It is an arithmetic number, because the mean of its divisors is an integer number (61271541).

Almost surely, 2^122543081 is an apocalyptic number.

It is an amenable number.

122543081 is a deficient number, since it is larger than the sum of its proper divisors (1).

122543081 is an equidigital number, since it uses as much as digits as its factorization.

122543081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 122543081 is about 11069.9178407069. The cubic root of 122543081 is about 496.7024075797.

The spelling of 122543081 in words is "one hundred twenty-two million, five hundred forty-three thousand, eighty-one".