2112231021 has 8 divisors (see below), whose sum is σ = 2820623520. Its totient is φ = 1405996272.

The previous prime is 2112231001. The next prime is 2112231029. The reversal of 2112231021 is 1201322112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112231021 - 2⁹ = 2112230509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112231029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 537151 + ... + 541068.

It is an arithmetic number, because the mean of its divisors is an integer number (352577940).

Almost surely, 2^2112231021 is an apocalyptic number.

It is an amenable number.

2112231021 is a deficient number, since it is larger than the sum of its proper divisors (708392499).

2112231021 is a wasteful number, since it uses less digits than its factorization.

2112231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078875.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2112231021 is about 45959.0145782087. The cubic root of 2112231021 is about 1283.0605110875.

Adding to 2112231021 its reverse (1201322112), we get a palindrome (3313553133).

The spelling of 2112231021 in words is "two billion, one hundred twelve million, two hundred thirty-one thousand, twenty-one".