222222245778 has 96 divisors (see below), whose sum is σ = 527569922880. Its totient is φ = 67183655040.

The previous prime is 222222245747. The next prime is 222222245797. The reversal of 222222245778 is 877542222222.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55263408 + ... + 55267428.

It is an arithmetic number, because the mean of its divisors is an integer number (5495520030).

Almost surely, 2^222222245778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222245778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263784961440).

222222245778 is an abundant number, since it is smaller than the sum of its proper divisors (305347677102).

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

222222245778 is a wasteful number, since it uses less digits than its factorization.

222222245778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104 (or 8101 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 45.

The spelling of 222222245778 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred forty-five thousand, seven hundred seventy-eight".