1110212220 has 96 divisors (see below), whose sum is σ = 3463225920. Its totient is φ = 263854080.

The previous prime is 1110212203. The next prime is 1110212267. The reversal of 1110212220 is 222120111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1110212196 and 1110212205.

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, 1921 + ... + 47160.

It is an arithmetic number, because the mean of its divisors is an integer number (36075270).

Almost surely, 2^1110212220 is an apocalyptic number.

1110212220 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 1110212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731612960).

1110212220 is an abundant number, since it is smaller than the sum of its proper divisors (2353013700).

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

1110212220 is a wasteful number, since it uses less digits than its factorization.

1110212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49135 (or 49133 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1110212220 is about 33319.8472385454. The cubic root of 1110212220 is about 1035.4647869296.

Adding to 1110212220 its reverse (222120111), we get a palindrome (1332332331).

The spelling of 1110212220 in words is "one billion, one hundred ten million, two hundred twelve thousand, two hundred twenty".