222357778890 has 128 divisors (see below), whose sum is σ = 590699692800. Its totient is φ = 53231523840.

The previous prime is 222357778879. The next prime is 222357778921. The reversal of 222357778890 is 98877753222.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2064801 + ... + 2169819.

It is an arithmetic number, because the mean of its divisors is an integer number (4614841350).

Almost surely, 2^222357778890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222357778890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295349846400).

222357778890 is an abundant number, since it is smaller than the sum of its proper divisors (368341913910).

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

222357778890 is a wasteful number, since it uses less digits than its factorization.

222357778890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105192.

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 222357778890 in words is "two hundred twenty-two billion, three hundred fifty-seven million, seven hundred seventy-eight thousand, eight hundred ninety".