122237785 has 4 divisors (see below), whose sum is σ = 146685348. Its totient is φ = 97790224.

The previous prime is 122237783. The next prime is 122237809. The reversal of 122237785 is 587732221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587732221 = 643 ⋅914047.

It can be written as a sum of positive squares in 2 ways, for example, as 31854736 + 90383049 = 5644^2 + 9507^2 .

It is a cyclic number.

It is not a de Polignac number, because 122237785 - 2¹ = 122237783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122237783) 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, 12223774 + ... + 12223783.

It is an arithmetic number, because the mean of its divisors is an integer number (36671337).

Almost surely, 2^122237785 is an apocalyptic number.

It is an amenable number.

122237785 is a deficient number, since it is larger than the sum of its proper divisors (24447563).

122237785 is an equidigital number, since it uses as much as digits as its factorization.

122237785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24447562.

The product of its digits is 47040, while the sum is 37.

The square root of 122237785 is about 11056.1197985550. The cubic root of 122237785 is about 496.2895803482.

The spelling of 122237785 in words is "one hundred twenty-two million, two hundred thirty-seven thousand, seven hundred eighty-five".