122651197 has 4 divisors (see below), whose sum is σ = 122729596. Its totient is φ = 122572800.

The previous prime is 122651183. The next prime is 122651201. The reversal of 122651197 is 791156221.

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 78481881 + 44169316 = 8859^2 + 6646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122651197 is a prime.

It is a super-2 number, since 2×122651197² = 30086632251065618, 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 (122651117) 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, 36804 + ... + 39997.

It is an arithmetic number, because the mean of its divisors is an integer number (30682399).

Almost surely, 2^122651197 is an apocalyptic number.

It is an amenable number.

122651197 is a deficient number, since it is larger than the sum of its proper divisors (78399).

122651197 is an equidigital number, since it uses as much as digits as its factorization.

122651197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78398.

The product of its digits is 7560, while the sum is 34.

The square root of 122651197 is about 11074.8000884892. The cubic root of 122651197 is about 496.8484397390.

The spelling of 122651197 in words is "one hundred twenty-two million, six hundred fifty-one thousand, one hundred ninety-seven".