211220120002211 has 32 divisors (see below), whose sum is σ = 234323808768000. Its totient is φ = 189496788151968.

The previous prime is 211220120002183. The next prime is 211220120002267. The reversal of 211220120002211 is 112200021022112.

It is not a de Polignac number, because 211220120002211 - 2⁶ = 211220120002147 is a prime.

It is a super-2 number, since 2×211220120002211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211220120002211.

It is not an unprimeable number, because it can be changed into a prime (211220120002271) 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, 16963736 + ... + 26649738.

It is an arithmetic number, because the mean of its divisors is an integer number (7322619024000).

Almost surely, 2^{211220120002211} is an apocalyptic number.

211220120002211 is a deficient number, since it is larger than the sum of its proper divisors (23103688765789).

211220120002211 is a wasteful number, since it uses less digits than its factorization.

211220120002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686543.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211220120002211 its reverse (112200021022112), we get a palindrome (323420141024323).

The spelling of 211220120002211 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred twenty million, two thousand, two hundred eleven".