122849643121 has 4 divisors (see below), whose sum is σ = 124683219952. Its totient is φ = 121016066292.

The previous prime is 122849643107. The next prime is 122849643131. The reversal of 122849643121 is 121346948221.

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: 121346948221 = 647 ⋅187553243.

It is a cyclic number.

It is not a de Polignac number, because 122849643121 - 2³⁵ = 88489904753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122849643131) 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, 916788315 + ... + 916788448.

It is an arithmetic number, because the mean of its divisors is an integer number (31170804988).

Almost surely, 2^122849643121 is an apocalyptic number.

It is an amenable number.

122849643121 is a deficient number, since it is larger than the sum of its proper divisors (1833576831).

122849643121 is an equidigital number, since it uses as much as digits as its factorization.

122849643121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833576830.

The product of its digits is 165888, while the sum is 43.

The spelling of 122849643121 in words is "one hundred twenty-two billion, eight hundred forty-nine million, six hundred forty-three thousand, one hundred twenty-one".