2110222111221 has 96 divisors (see below), whose sum is σ = 3669956699136. Its totient is φ = 1143072000000.

The previous prime is 2110222111211. The next prime is 2110222111229. The reversal of 2110222111221 is 1221112220112.

2110222111221 is a `hidden beast` number, since 2 + 110 + 222 + 111 + 221 = 666.

It is not a de Polignac number, because 2110222111221 - 2²⁵ = 2110188556789 is a prime.

It is a super-2 number, since 2×2110222111221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2110222111194 and 2110222111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110222111229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 71759121 + ... + 71788521.

It is an arithmetic number, because the mean of its divisors is an integer number (38228715616).

Almost surely, 2^{2110222111221} is an apocalyptic number.

2110222111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2110222111221 is a deficient number, since it is larger than the sum of its proper divisors (1559734587915).

2110222111221 is a wasteful number, since it uses less digits than its factorization.

2110222111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30243 (or 30240 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2110222111221 its reverse (1221112220112), we get a palindrome (3331334331333).

The spelling of 2110222111221 in words is "two trillion, one hundred ten billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".