212200010111221 has 32 divisors (see below), whose sum is σ = 241333221989376. Its totient is φ = 184831008960000.

The previous prime is 212200010111213. The next prime is 212200010111249. The reversal of 212200010111221 is 122111010002212.

It is a cyclic number.

It is not a de Polignac number, because 212200010111221 - 2³ = 212200010111213 is a prime.

It is a super-2 number, since 2×212200010111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212200010111195 and 212200010111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200010115221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1079179311 + ... + 1079375923.

It is an arithmetic number, because the mean of its divisors is an integer number (7541663187168).

Almost surely, 2^{212200010111221} is an apocalyptic number.

It is an amenable number.

212200010111221 is a deficient number, since it is larger than the sum of its proper divisors (29133211878155).

212200010111221 is a wasteful number, since it uses less digits than its factorization.

212200010111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228093.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212200010111221 its reverse (122111010002212), we get a palindrome (334311020113433).

It can be divided in two parts, 2122000 and 10111221, that added together give a palindrome (12233221).

The spelling of 212200010111221 in words is "two hundred twelve trillion, two hundred billion, ten million, one hundred eleven thousand, two hundred twenty-one".