211222020211 has 8 divisors (see below), whose sum is σ = 213885708624. Its totient is φ = 208561161600.

The previous prime is 211222020193. The next prime is 211222020241. The reversal of 211222020211 is 112020222112.

It is a happy number.

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 211222020211 - 2⁵ = 211222020179 is a prime.

It is a super-2 number, since 2×211222020211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222020241) 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, 557026 + ... + 855991.

It is an arithmetic number, because the mean of its divisors is an integer number (26735713578).

Almost surely, 2^211222020211 is an apocalyptic number.

211222020211 is a deficient number, since it is larger than the sum of its proper divisors (2663688413).

211222020211 is a wasteful number, since it uses less digits than its factorization.

211222020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414901.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211222020211 its reverse (112020222112), we get a palindrome (323242242323).

The spelling of 211222020211 in words is "two hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred eleven".