2202110212221 has 12 divisors (see below), whose sum is σ = 3182850596640. Its totient is φ = 1467138981960.

The previous prime is 2202110212219. The next prime is 2202110212223. The reversal of 2202110212221 is 1222120112022.

It is a happy number.

2202110212221 is a `hidden beast` number, since 2 + 20 + 211 + 0 + 212 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (2202110212219) and next prime (2202110212223).

It is not a de Polignac number, because 2202110212221 - 2¹ = 2202110212219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202110212194 and 2202110212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202110212223) 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, 77859481 + ... + 77887758.

It is an arithmetic number, because the mean of its divisors is an integer number (265237549720).

Almost surely, 2^{2202110212221} is an apocalyptic number.

It is an amenable number.

2202110212221 is a deficient number, since it is larger than the sum of its proper divisors (980740384419).

2202110212221 is a wasteful number, since it uses less digits than its factorization.

2202110212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155748816 (or 155748813 counting only the distinct ones).

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

Adding to 2202110212221 its reverse (1222120112022), we get a palindrome (3424230324243).

The spelling of 2202110212221 in words is "two trillion, two hundred two billion, one hundred ten million, two hundred twelve thousand, two hundred twenty-one".