2110202122221 has 24 divisors (see below), whose sum is σ = 3137134688064. Its totient is φ = 1366285979520.

The previous prime is 2110202122213. The next prime is 2110202122247. The reversal of 2110202122221 is 1222212020112.

It is a happy number.

2110202122221 is a `hidden beast` number, since 211 + 0 + 20 + 212 + 2 + 221 = 666.

It is not a de Polignac number, because 2110202122221 - 2³ = 2110202122213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2110202122194 and 2110202122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110202122261) 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, 24601596 + ... + 24687221.

It is an arithmetic number, because the mean of its divisors is an integer number (130713945336).

Almost surely, 2^{2110202122221} is an apocalyptic number.

It is an amenable number.

2110202122221 is a deficient number, since it is larger than the sum of its proper divisors (1026932565843).

2110202122221 is a wasteful number, since it uses less digits than its factorization.

2110202122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49288961 (or 49288958 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2110202122221 its reverse (1222212020112), we get a palindrome (3332414142333).

The spelling of 2110202122221 in words is "two trillion, one hundred ten billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".