2211112021 has 8 divisors (see below), whose sum is σ = 2363909184. Its totient is φ = 2060840640.

The previous prime is 2211112003. The next prime is 2211112049. The reversal of 2211112021 is 1202111122.

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

It is not a de Polignac number, because 2211112021 - 2⁷ = 2211111893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211111992 and 2211112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211112051) 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, 629635 + ... + 633136.

It is an arithmetic number, because the mean of its divisors is an integer number (295488648).

Almost surely, 2^2211112021 is an apocalyptic number.

It is an amenable number.

2211112021 is a deficient number, since it is larger than the sum of its proper divisors (152797163).

2211112021 is a wasteful number, since it uses less digits than its factorization.

2211112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262891.

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

The square root of 2211112021 is about 47022.4629405989. The cubic root of 2211112021 is about 1302.7774976429. Note that the first 3 decimals are identical.

Adding to 2211112021 its reverse (1202111122), we get a palindrome (3413223143).

The spelling of 2211112021 in words is "two billion, two hundred eleven million, one hundred twelve thousand, twenty-one".