211002012112221 has 48 divisors (see below), whose sum is σ = 333635987475648. Its totient is φ = 127438720819200.

The previous prime is 211002012112187. The next prime is 211002012112253. The reversal of 211002012112221 is 122211210200112.

211002012112221 is a `hidden beast` number, since 21 + 10 + 0 + 201 + 211 + 2 + 221 = 666.

It is not a de Polignac number, because 211002012112221 - 2²³ = 211002003723613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211002012112194 and 211002012112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002012111221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104794845 + ... + 106789341.

It is an arithmetic number, because the mean of its divisors is an integer number (6950749739076).

Almost surely, 2^{211002012112221} is an apocalyptic number.

It is an amenable number.

211002012112221 is a deficient number, since it is larger than the sum of its proper divisors (122633975363427).

211002012112221 is a wasteful number, since it uses less digits than its factorization.

211002012112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998202 (or 1998199 counting only the distinct ones).

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

Adding to 211002012112221 its reverse (122211210200112), we get a palindrome (333213222312333).

It can be divided in two parts, 2110020 and 12112221, that added together give a palindrome (14222241).

The spelling of 211002012112221 in words is "two hundred eleven trillion, two billion, twelve million, one hundred twelve thousand, two hundred twenty-one".