222011112211110 has 144 divisors (see below), whose sum is σ = 599011071081696. Its totient is φ = 57043628614656.

The previous prime is 222011112211061. The next prime is 222011112211129. The reversal of 222011112211110 is 11112211110222.

It is a happy number.

222011112211110 is a `hidden beast` number, since 2 + 220 + 1 + 111 + 221 + 1 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3943582 + ... + 21437678.

It is an arithmetic number, because the mean of its divisors is an integer number (4159799104734).

Almost surely, 2^{222011112211110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222011112211110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299505535540848).

222011112211110 is an abundant number, since it is smaller than the sum of its proper divisors (376999958870586).

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

222011112211110 is a wasteful number, since it uses less digits than its factorization.

222011112211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17494287 (or 17494247 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222011112211110 its reverse (11112211110222), we get a palindrome (233123323321332).

It can be divided in two parts, 222011112 and 211110, that added together give a palindrome (222222222).

The spelling of 222011112211110 in words is "two hundred twenty-two trillion, eleven billion, one hundred twelve million, two hundred eleven thousand, one hundred ten".