2110120221221 has 16 divisors (see below), whose sum is σ = 2192427699840. Its totient is φ = 2028455352000.

The previous prime is 2110120221203. The next prime is 2110120221227. The reversal of 2110120221221 is 1221220210112.

It is a cyclic number.

It is not a de Polignac number, because 2110120221221 - 2²² = 2110116026917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2110120221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110120221227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19212755 + ... + 19322271.

It is an arithmetic number, because the mean of its divisors is an integer number (137026731240).

Almost surely, 2^{2110120221221} is an apocalyptic number.

It is an amenable number.

2110120221221 is a deficient number, since it is larger than the sum of its proper divisors (82307478619).

2110120221221 is a wasteful number, since it uses less digits than its factorization.

2110120221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112444.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2110120221221 its reverse (1221220210112), we get a palindrome (3331340431333).

The spelling of 2110120221221 in words is "two trillion, one hundred ten billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".