212010022111221 has 12 divisors (see below), whose sum is σ = 306316302683872. Its totient is φ = 141303274396776.

The previous prime is 212010022111213. The next prime is 212010022111229. The reversal of 212010022111221 is 122111220010212.

212010022111221 is a `hidden beast` number, since 2 + 120 + 100 + 221 + 1 + 1 + 221 = 666.

212010022111221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212010022111213) and next prime (212010022111229).

It is not a de Polignac number, because 212010022111221 - 2³ = 212010022111213 is a prime.

It is a super-2 number, since 2×212010022111221² (a number of 29 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 = 212010022111194 and 212010022111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010022111229) 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, 3061658791 + ... + 3061728036.

Almost surely, 2^{212010022111221} is an apocalyptic number.

It is an amenable number.

212010022111221 is a deficient number, since it is larger than the sum of its proper divisors (94306280572651).

212010022111221 is a wasteful number, since it uses less digits than its factorization.

212010022111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6123390680 (or 6123390677 counting only the distinct ones).

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

Adding to 212010022111221 its reverse (122111220010212), we get a palindrome (334121242121433).

The spelling of 212010022111221 in words is "two hundred twelve trillion, ten billion, twenty-two million, one hundred eleven thousand, two hundred twenty-one".