111010221000 has 384 divisors, whose sum is σ = 454045512960. Its totient is φ = 23880960000.

The previous prime is 111010220989. The next prime is 111010221011. The reversal of 111010221000 is 122010111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111010220989) and next prime (111010221011).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1019175 + ... + 1122825.

It is an arithmetic number, because the mean of its divisors is an integer number (1182410190).

Almost surely, 2^111010221000 is an apocalyptic number.

111010221000 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 111010221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227022756480).

111010221000 is an abundant number, since it is smaller than the sum of its proper divisors (343035291960).

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

111010221000 is a wasteful number, since it uses less digits than its factorization.

111010221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103702 (or 103685 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111010221000 its reverse (122010111), we get a palindrome (111132231111).

The spelling of 111010221000 in words is "one hundred eleven billion, ten million, two hundred twenty-one thousand".