111222211000 has 128 divisors (see below), whose sum is σ = 279685224000. Its totient is φ = 41246515200.

The previous prime is 111222210997. The next prime is 111222211027. The reversal of 111222211000 is 112222111.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1090176 + ... + 1187824.

Almost surely, 2^111222211000 is an apocalyptic number.

111222211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139842612000).

111222211000 is an abundant number, since it is smaller than the sum of its proper divisors (168463013000).

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

111222211000 is a wasteful number, since it uses less digits than its factorization.

111222211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97754 (or 97740 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111222211000 its reverse (112222111), we get a palindrome (111334433111).

The spelling of 111222211000 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand".