122550181 has 6 divisors (see below), whose sum is σ = 132702450. Its totient is φ = 113123088.

The previous prime is 122550173. The next prime is 122550217. The reversal of 122550181 is 181055221.

It can be written as a sum of positive squares in 3 ways, for example, as 801025 + 121749156 = 895^2 + 11034^2 .

It is not a de Polignac number, because 122550181 - 2³ = 122550173 is a prime.

It is a super-2 number, since 2×122550181² = 30037093726265522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122550101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362406 + ... + 362743.

It is an arithmetic number, because the mean of its divisors is an integer number (22117075).

Almost surely, 2^122550181 is an apocalyptic number.

It is an amenable number.

122550181 is a deficient number, since it is larger than the sum of its proper divisors (10152269).

122550181 is an equidigital number, since it uses as much as digits as its factorization.

122550181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725175 (or 725162 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 122550181 is about 11070.2385249822. The cubic root of 122550181 is about 496.7120001762.

The spelling of 122550181 in words is "one hundred twenty-two million, five hundred fifty thousand, one hundred eighty-one".