122771137 has 4 divisors (see below), whose sum is σ = 122793300. Its totient is φ = 122748976.

The previous prime is 122771081. The next prime is 122771147. The reversal of 122771137 is 731177221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5612161 + 117158976 = 2369^2 + 10824^2 .

It is a cyclic number.

It is not a de Polignac number, because 122771137 - 2⁷ = 122771009 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122771099 and 122771108.

It is not an unprimeable number, because it can be changed into a prime (122771147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5343 + ... + 16555.

It is an arithmetic number, because the mean of its divisors is an integer number (30698325).

Almost surely, 2^122771137 is an apocalyptic number.

It is an amenable number.

122771137 is a deficient number, since it is larger than the sum of its proper divisors (22163).

122771137 is a wasteful number, since it uses less digits than its factorization.

122771137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22162.

The product of its digits is 4116, while the sum is 31.

The square root of 122771137 is about 11080.2137614759. The cubic root of 122771137 is about 497.0103421880.

The spelling of 122771137 in words is "one hundred twenty-two million, seven hundred seventy-one thousand, one hundred thirty-seven".