202210102111221 has 12 divisors (see below), whose sum is σ = 292086285798060. Its totient is φ = 134804414497920.

The previous prime is 202210102111187. The next prime is 202210102111273. The reversal of 202210102111221 is 122111201012202.

202210102111221 is a `hidden beast` number, since 2 + 0 + 221 + 0 + 10 + 211 + 1 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49724921528100 + 152485180583121 = 7051590^2 + 12348489^2 .

It is not a de Polignac number, because 202210102111221 - 2¹⁰ = 202210102110197 is a prime.

It is a super-2 number, since 2×202210102111221² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202210102111194 and 202210102111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210102111291) 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, 192801540 + ... + 193847501.

It is an arithmetic number, because the mean of its divisors is an integer number (24340523816505).

Almost surely, 2^{202210102111221} is an apocalyptic number.

It is an amenable number.

202210102111221 is a deficient number, since it is larger than the sum of its proper divisors (89876183686839).

202210102111221 is a wasteful number, since it uses less digits than its factorization.

202210102111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386707156 (or 386707153 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202210102111221 its reverse (122111201012202), we get a palindrome (324321303123423).

The spelling of 202210102111221 in words is "two hundred two trillion, two hundred ten billion, one hundred two million, one hundred eleven thousand, two hundred twenty-one".