2231111020 has 24 divisors (see below), whose sum is σ = 4686263568. Its totient is φ = 892267200.

The previous prime is 2231110961. The next prime is 2231111023. The reversal of 2231111020 is 201111322.

It is a super-3 number, since 3×2231111020³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231111023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147615 + ... + 162025.

It is an arithmetic number, because the mean of its divisors is an integer number (195260982).

Almost surely, 2^2231111020 is an apocalyptic number.

2231111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231111020 is an abundant number, since it is smaller than the sum of its proper divisors (2455152548).

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

2231111020 is a wasteful number, since it uses less digits than its factorization.

2231111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22161 (or 22159 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2231111020 is about 47234.6379259966. The cubic root of 2231111020 is about 1306.6934889966.

Adding to 2231111020 its reverse (201111322), we get a palindrome (2432222342).

The spelling of 2231111020 in words is "two billion, two hundred thirty-one million, one hundred eleven thousand, twenty".