122058698161 has 3 divisors (see below), whose sum is σ = 122059047531. Its totient is φ = 122058348792.

The previous prime is 122058698143. The next prime is 122058698257. The reversal of 122058698161 is 161896850221.

The square root of 122058698161 is 349369.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 80979515761 + 41079182400 = 284569^2 + 202680^2 .

It is not a de Polignac number, because 122058698161 - 2²³ = 122050309553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122058698141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 174685 + ... + 524053.

It is an arithmetic number, because the mean of its divisors is an integer number (40686349177).

Almost surely, 2^122058698161 is an apocalyptic number.

122058698161 is the 349369-th square number.

122058698161 is the 174685-th centered octagonal number.

It is an amenable number.

122058698161 is a deficient number, since it is larger than the sum of its proper divisors (349370).

122058698161 is an frugal number, since it uses more digits than its factorization.

122058698161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698738 (or 349369 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

Multiplying 122058698161 by its sum of digits (49), we get a square (5980876209889 = 2445583²).

The spelling of 122058698161 in words is "one hundred twenty-two billion, fifty-eight million, six hundred ninety-eight thousand, one hundred sixty-one".