202200202111221 has 12 divisors (see below), whose sum is σ = 294958710671820. Its totient is φ = 133465479940800.

The previous prime is 202200202111207. The next prime is 202200202111241. The reversal of 202200202111221 is 122111202002202.

It is a happy number.

202200202111221 is a `hidden beast` number, since 20 + 220 + 0 + 202 + 1 + 1 + 1 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 197497658064996 + 4702544046225 = 14053386^2 + 2168535^2 .

It is not a de Polignac number, because 202200202111221 - 2⁶ = 202200202111157 is a prime.

It is a super-2 number, since 2×202200202111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202200202111194 and 202200202111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202200202111241) 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, 111221232376 + ... + 111221234193.

It is an arithmetic number, because the mean of its divisors is an integer number (24579892555985).

Almost surely, 2^{202200202111221} is an apocalyptic number.

It is an amenable number.

202200202111221 is a deficient number, since it is larger than the sum of its proper divisors (92758508560599).

202200202111221 is a wasteful number, since it uses less digits than its factorization.

202200202111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222442466676 (or 222442466673 counting only the distinct ones).

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

Adding to 202200202111221 its reverse (122111202002202), we get a palindrome (324311404113423).

The spelling of 202200202111221 in words is "two hundred two trillion, two hundred billion, two hundred two million, one hundred eleven thousand, two hundred twenty-one".