122251577 has 4 divisors (see below), whose sum is σ = 139716096. Its totient is φ = 104787060.

The previous prime is 122251553. The next prime is 122251637. The reversal of 122251577 is 775152221.

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: 775152221 = 22247 ⋅34843.

It is not a de Polignac number, because 122251577 - 2¹² = 122247481 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122251517) 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, 8732249 + ... + 8732262.

It is an arithmetic number, because the mean of its divisors is an integer number (34929024).

Almost surely, 2^122251577 is an apocalyptic number.

It is an amenable number.

122251577 is a deficient number, since it is larger than the sum of its proper divisors (17464519).

122251577 is an equidigital number, since it uses as much as digits as its factorization.

122251577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17464518.

The product of its digits is 9800, while the sum is 32.

The square root of 122251577 is about 11056.7435079231. The cubic root of 122251577 is about 496.3082449765.

The spelling of 122251577 in words is "one hundred twenty-two million, two hundred fifty-one thousand, five hundred seventy-seven".