211200212200221 has 12 divisors (see below), whose sum is σ = 305160237351840. Its totient is φ = 140757096463560.

The previous prime is 211200212200207. The next prime is 211200212200253. The reversal of 211200212200221 is 122002212002112.

It is a happy number.

211200212200221 is a `hidden beast` number, since 2 + 1 + 1 + 200 + 21 + 220 + 0 + 221 = 666.

It is not a de Polignac number, because 211200212200221 - 2³³ = 211191622265629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211200212200194 and 211200212200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200212205221) 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, 3587052531 + ... + 3587111408.

It is an arithmetic number, because the mean of its divisors is an integer number (25430019779320).

Almost surely, 2^{211200212200221} is an apocalyptic number.

It is an amenable number.

211200212200221 is a deficient number, since it is larger than the sum of its proper divisors (93960025151619).

211200212200221 is a wasteful number, since it uses less digits than its factorization.

211200212200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7174167216 (or 7174167213 counting only the distinct ones).

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

Adding to 211200212200221 its reverse (122002212002112), we get a palindrome (333202424202333).

The spelling of 211200212200221 in words is "two hundred eleven trillion, two hundred billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".