122292181 has 8 divisors (see below), whose sum is σ = 133503264. Its totient is φ = 111096720.

The previous prime is 122292139. The next prime is 122292187. The reversal of 122292181 is 181292221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122292181 is a prime.

It is a super-2 number, since 2×122292181² = 29910755067473522, 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 (122292187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17686 + ... + 23608.

It is an arithmetic number, because the mean of its divisors is an integer number (16687908).

Almost surely, 2^122292181 is an apocalyptic number.

122292181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122292181 is a deficient number, since it is larger than the sum of its proper divisors (11211083).

122292181 is a wasteful number, since it uses less digits than its factorization.

122292181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811.

The product of its digits is 1152, while the sum is 28.

The square root of 122292181 is about 11058.5795199926. The cubic root of 122292181 is about 496.3631859701.

The spelling of 122292181 in words is "one hundred twenty-two million, two hundred ninety-two thousand, one hundred eighty-one".