122144447778222 has 64 divisors (see below), whose sum is σ = 261584765660160. Its totient is φ = 37886419608576.

The previous prime is 122144447778163. The next prime is 122144447778247. The reversal of 122144447778222 is 222877744441221.

It is a super-2 number, since 2×122144447778222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121936173 + ... + 122933799.

It is an arithmetic number, because the mean of its divisors is an integer number (4087261963440).

Almost surely, 2^{122144447778222} is an apocalyptic number.

122144447778222 is an abundant number, since it is smaller than the sum of its proper divisors (139440317881938).

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

122144447778222 is a wasteful number, since it uses less digits than its factorization.

122144447778222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011225.

The product of its digits is 22478848, while the sum is 57.

The spelling of 122144447778222 in words is "one hundred twenty-two trillion, one hundred forty-four billion, four hundred forty-seven million, seven hundred seventy-eight thousand, two hundred twenty-two".