1011200220 has 96 divisors (see below), whose sum is σ = 3222757440. Its totient is φ = 263070720.

The previous prime is 1011200213. The next prime is 1011200243. The reversal of 1011200220 is 220021101.

1011200220 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 (9).

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, 697 + ... + 44976.

It is an arithmetic number, because the mean of its divisors is an integer number (33570390).

Almost surely, 2^1011200220 is an apocalyptic number.

1011200220 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 1011200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611378720).

1011200220 is an abundant number, since it is smaller than the sum of its proper divisors (2211557220).

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

1011200220 is a wasteful number, since it uses less digits than its factorization.

1011200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45732 (or 45724 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1011200220 is about 31799.3745221506. The cubic root of 1011200220 is about 1003.7195544281.

Adding to 1011200220 its reverse (220021101), we get a palindrome (1231221321).

The spelling of 1011200220 in words is "one billion, eleven million, two hundred thousand, two hundred twenty".