122151075577 has 4 divisors (see below), whose sum is σ = 125452456036. Its totient is φ = 118849695120.

The previous prime is 122151075569. The next prime is 122151075581. The reversal of 122151075577 is 775570151221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775570151221 = 735247 ⋅1054843.

It can be written as a sum of positive squares in 2 ways, for example, as 59264981136 + 62886094441 = 243444^2 + 250771^2 .

It is a cyclic number.

It is not a de Polignac number, because 122151075577 - 2³ = 122151075569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122151075517) 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, 1650690174 + ... + 1650690247.

It is an arithmetic number, because the mean of its divisors is an integer number (31363114009).

Almost surely, 2^122151075577 is an apocalyptic number.

It is an amenable number.

122151075577 is a deficient number, since it is larger than the sum of its proper divisors (3301380459).

122151075577 is an equidigital number, since it uses as much as digits as its factorization.

122151075577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301380458.

The product of its (nonzero) digits is 171500, while the sum is 43.

The spelling of 122151075577 in words is "one hundred twenty-two billion, one hundred fifty-one million, seventy-five thousand, five hundred seventy-seven".