211222100002221 has 60 divisors (see below), whose sum is σ = 396367397663776. Its totient is φ = 109725766199280.

The previous prime is 211222100002219. The next prime is 211222100002261. The reversal of 211222100002221 is 122200001222112.

It is a happy number.

211222100002221 is a `hidden beast` number, since 211 + 22 + 210 + 0 + 0 + 0 + 2 + 221 = 666.

211222100002221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211222100002221 - 2¹ = 211222100002219 is a prime.

It is a super-2 number, since 2×211222100002221² (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 = 211222100002194 and 211222100002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222100002201) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1539293995 + ... + 1539431208.

Almost surely, 2^{211222100002221} is an apocalyptic number.

211222100002221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211222100002221 is a deficient number, since it is larger than the sum of its proper divisors (185145297661555).

211222100002221 is a wasteful number, since it uses less digits than its factorization.

211222100002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078725244 (or 3078725224 counting only the distinct ones).

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

Adding to 211222100002221 its reverse (122200001222112), we get a palindrome (333422101224333).

The spelling of 211222100002221 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, two thousand, two hundred twenty-one".