122864197 has 4 divisors (see below), whose sum is σ = 124419520. Its totient is φ = 121308876.

The previous prime is 122864179. The next prime is 122864207. The reversal of 122864197 is 791468221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791468221 = 37 ⋅21391033.

It is a cyclic number.

It is not a de Polignac number, because 122864197 - 2⁷ = 122864069 is a prime.

It is a super-2 number, since 2×122864197² = 30191221808909618, 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 (122864107) 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, 777543 + ... + 777700.

It is an arithmetic number, because the mean of its divisors is an integer number (31104880).

Almost surely, 2^122864197 is an apocalyptic number.

It is an amenable number.

122864197 is a deficient number, since it is larger than the sum of its proper divisors (1555323).

122864197 is an equidigital number, since it uses as much as digits as its factorization.

122864197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555322.

The product of its digits is 48384, while the sum is 40.

The square root of 122864197 is about 11084.4123434668. The cubic root of 122864197 is about 497.1358877146.

The spelling of 122864197 in words is "one hundred twenty-two million, eight hundred sixty-four thousand, one hundred ninety-seven".