22110210202221 has 12 divisors (see below), whose sum is σ = 31941096083260. Its totient is φ = 14738235923520.

The previous prime is 22110210202187. The next prime is 22110210202277. The reversal of 22110210202221 is 12220201201122.

It is a happy number.

22110210202221 is a `hidden beast` number, since 2 + 21 + 10 + 210 + 202 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1742914838025 + 20367295364196 = 1320195^2 + 4513014^2 .

It is not a de Polignac number, because 22110210202221 - 2¹³ = 22110210194029 is a prime.

It is a super-2 number, since 2×22110210202221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110210202194 and 22110210202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110210202621) 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, 158610736 + ... + 158750073.

Almost surely, 2^{22110210202221} is an apocalyptic number.

It is an amenable number.

22110210202221 is a deficient number, since it is larger than the sum of its proper divisors (9830885881039).

22110210202221 is a wasteful number, since it uses less digits than its factorization.

22110210202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317368556 (or 317368553 counting only the distinct ones).

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

Adding to 22110210202221 its reverse (12220201201122), we get a palindrome (34330411403343).

The spelling of 22110210202221 in words is "twenty-two trillion, one hundred ten billion, two hundred ten million, two hundred two thousand, two hundred twenty-one".