201220012211 has 4 divisors (see below), whose sum is σ = 201223875072. Its totient is φ = 201216149352.

The previous prime is 201220012199. The next prime is 201220012223. The reversal of 201220012211 is 112210022102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112210022102 = 2 ⋅56105011051.

It is an interprime number because it is at equal distance from previous prime (201220012199) and next prime (201220012223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201220012211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220012111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852211 + ... + 1957836.

It is an arithmetic number, because the mean of its divisors is an integer number (50305968768).

Almost surely, 2^201220012211 is an apocalyptic number.

201220012211 is a deficient number, since it is larger than the sum of its proper divisors (3862861).

201220012211 is an equidigital number, since it uses as much as digits as its factorization.

201220012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862860.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201220012211 its reverse (112210022102), we get a palindrome (313430034313).

The spelling of 201220012211 in words is "two hundred one billion, two hundred twenty million, twelve thousand, two hundred eleven".