2112211021 has 8 divisors (see below), whose sum is σ = 2145348288. Its totient is φ = 2079168000.

The previous prime is 2112210983. The next prime is 2112211039. The reversal of 2112211021 is 1201122112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112211021 - 2²⁷ = 1977993293 is a prime.

It is a super-2 number, since 2×2112211021² = 8922870794467724882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112210992 and 2112211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112211051) 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, 22306 + ... + 68716.

It is an arithmetic number, because the mean of its divisors is an integer number (268168536).

Almost surely, 2^2112211021 is an apocalyptic number.

It is an amenable number.

2112211021 is a deficient number, since it is larger than the sum of its proper divisors (33137267).

2112211021 is an equidigital number, since it uses as much as digits as its factorization.

2112211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47123.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2112211021 is about 45958.7969925236. The cubic root of 2112211021 is about 1283.0564614529.

Adding to 2112211021 its reverse (1201122112), we get a palindrome (3313333133).

The spelling of 2112211021 in words is "two billion, one hundred twelve million, two hundred eleven thousand, twenty-one".