122204778 has 16 divisors (see below), whose sum is σ = 245824416. Its totient is φ = 40499120.

The previous prime is 122204749. The next prime is 122204783. The reversal of 122204778 is 877402221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57828 + ... + 59903.

It is an arithmetic number, because the mean of its divisors is an integer number (15364026).

Almost surely, 2^122204778 is an apocalyptic number.

122204778 is an abundant number, since it is smaller than the sum of its proper divisors (123619638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122204778 is a wasteful number, since it uses less digits than its factorization.

122204778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117909.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 122204778 is about 11054.6269950641. The cubic root of 122204778 is about 496.2449064780.

Adding to 122204778 its reverse (877402221), we get a palindrome (999606999).

The spelling of 122204778 in words is "one hundred twenty-two million, two hundred four thousand, seven hundred seventy-eight".