2110212202221 has 12 divisors (see below), whose sum is σ = 3078263345820. Its totient is φ = 1392879340800.

The previous prime is 2110212202181. The next prime is 2110212202249. The reversal of 2110212202221 is 1222022120112.

It is a happy number.

2110212202221 is a `hidden beast` number, since 21 + 10 + 212 + 202 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 927588576996 + 1182623625225 = 963114^2 + 1087485^2 .

It is not a de Polignac number, because 2110212202221 - 2¹³ = 2110212194029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2110212202194 and 2110212202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110212102221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1160731876 + ... + 1160733693.

It is an arithmetic number, because the mean of its divisors is an integer number (256521945485).

Almost surely, 2^{2110212202221} is an apocalyptic number.

It is an amenable number.

2110212202221 is a deficient number, since it is larger than the sum of its proper divisors (968051143599).

2110212202221 is a wasteful number, since it uses less digits than its factorization.

2110212202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321465676 (or 2321465673 counting only the distinct ones).

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

Adding to 2110212202221 its reverse (1222022120112), we get a palindrome (3332234322333).

The spelling of 2110212202221 in words is "two trillion, one hundred ten billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".