2111112002221 has 24 divisors (see below), whose sum is σ = 2169882771840. Its totient is φ = 2052990680832.

The previous prime is 2111112002213. The next prime is 2111112002231. The reversal of 2111112002221 is 1222002111112.

It is not a de Polignac number, because 2111112002221 - 2³ = 2111112002213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111112002195 and 2111112002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111112002231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2092280965 + ... + 2092281973.

It is an arithmetic number, because the mean of its divisors is an integer number (90411782160).

Almost surely, 2^{2111112002221} is an apocalyptic number.

It is an amenable number.

2111112002221 is a deficient number, since it is larger than the sum of its proper divisors (58770769619).

2111112002221 is an equidigital number, since it uses as much as digits as its factorization.

2111112002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2111112002221 its reverse (1222002111112), we get a palindrome (3333114113333).

The spelling of 2111112002221 in words is "two trillion, one hundred eleven billion, one hundred twelve million, two thousand, two hundred twenty-one".