2110022120221 has 16 divisors (see below), whose sum is σ = 2166577888176. Its totient is φ = 2054188800000.

The previous prime is 2110022120207. The next prime is 2110022120231. The reversal of 2110022120221 is 1220212200112.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 522772380900 + 1587249739321 = 723030^2 + 1259861^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110022120221 - 2²³ = 2110013731613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110022120195 and 2110022120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110022120231) 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, 18679291 + ... + 18791911.

It is an arithmetic number, because the mean of its divisors is an integer number (135411118011).

Almost surely, 2^{2110022120221} is an apocalyptic number.

It is an amenable number.

2110022120221 is a deficient number, since it is larger than the sum of its proper divisors (56555767955).

2110022120221 is a wasteful number, since it uses less digits than its factorization.

2110022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115824.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2110022120221 its reverse (1220212200112), we get a palindrome (3330234320333).

The spelling of 2110022120221 in words is "two trillion, one hundred ten billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".