122120194849 has 9 divisors (see below), whose sum is σ = 124246087473. Its totient is φ = 120030092532.

The previous prime is 122120194843. The next prime is 122120194877. The reversal of 122120194849 is 948491021221.

The square root of 122120194849 is 349457.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 122120194849 - 2⁹ = 122120194337 is a prime.

It is a super-2 number, since 2×122120194849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120194843) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20615002 + ... + 20620924.

Almost surely, 2^122120194849 is an apocalyptic number.

122120194849 is the 349457-th square number.

122120194849 is the 174729-th centered octagonal number.

It is an amenable number.

122120194849 is a deficient number, since it is larger than the sum of its proper divisors (2125892624).

122120194849 is an frugal number, since it uses more digits than its factorization.

122120194849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11964 (or 5982 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

It can be divided in two parts, 122120 and 194849, that added together give a square (316969 = 563²).

The spelling of 122120194849 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred ninety-four thousand, eight hundred forty-nine".