211221200112011 has 8 divisors (see below), whose sum is σ = 211473521923584. Its totient is φ = 210968954415720.

The previous prime is 211221200111939. The next prime is 211221200112031. The reversal of 211221200112011 is 110211002122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211221200112011 - 2⁴² = 206823153600907 is a prime.

It is a super-2 number, since 2×211221200112011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221200112031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13474505 + ... + 24576506.

It is an arithmetic number, because the mean of its divisors is an integer number (26434190240448).

Almost surely, 2^{211221200112011} is an apocalyptic number.

211221200112011 is a deficient number, since it is larger than the sum of its proper divisors (252321811573).

211221200112011 is an equidigital number, since it uses as much as digits as its factorization.

211221200112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38057641.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211221200112011 its reverse (110211002122112), we get a palindrome (321432202234123).

The spelling of 211221200112011 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred million, one hundred twelve thousand, eleven".