222221112221010 has 128 divisors (see below), whose sum is σ = 636068090548224. Its totient is φ = 48581442328320.

The previous prime is 222221112220937. The next prime is 222221112221029. The reversal of 222221112221010 is 10122211122222.

222221112221010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 64774125 + ... + 68118495.

It is an arithmetic number, because the mean of its divisors is an integer number (4969281957408).

Almost surely, 2^{222221112221010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221112221010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318034045274112).

222221112221010 is an abundant number, since it is smaller than the sum of its proper divisors (413846978327214).

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

222221112221010 is a wasteful number, since it uses less digits than its factorization.

222221112221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358168.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222221112221010 its reverse (10122211122222), we get a palindrome (232343323343232).

The spelling of 222221112221010 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, ten".