122155697 has 4 divisors (see below), whose sum is σ = 122231076. Its totient is φ = 122080320.

The previous prime is 122155681. The next prime is 122155723. The reversal of 122155697 is 796551221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34527376 + 87628321 = 5876^2 + 9361^2 .

It is a cyclic number.

It is not a de Polignac number, because 122155697 - 2⁴ = 122155681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122155697.

It is not an unprimeable number, because it can be changed into a prime (122155597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35204 + ... + 38517.

It is an arithmetic number, because the mean of its divisors is an integer number (30557769).

Almost surely, 2^122155697 is an apocalyptic number.

It is an amenable number.

122155697 is a deficient number, since it is larger than the sum of its proper divisors (75379).

122155697 is an equidigital number, since it uses as much as digits as its factorization.

122155697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75378.

The product of its digits is 37800, while the sum is 38.

The square root of 122155697 is about 11052.4068419508. The cubic root of 122155697 is about 496.1784621101.

The spelling of 122155697 in words is "one hundred twenty-two million, one hundred fifty-five thousand, six hundred ninety-seven".