211222110010111 has 4 divisors (see below), whose sum is σ = 213766954709112. Its totient is φ = 208677265311112.

The previous prime is 211222110010103. The next prime is 211222110010201. The reversal of 211222110010111 is 111010011222112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211222110010111 - 2³ = 211222110010103 is a prime.

It is a super-2 number, since 2×211222110010111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222110011111) 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, 1272422349376 + ... + 1272422349541.

It is an arithmetic number, because the mean of its divisors is an integer number (53441738677278).

Almost surely, 2^{211222110010111} is an apocalyptic number.

211222110010111 is a deficient number, since it is larger than the sum of its proper divisors (2544844699001).

211222110010111 is an equidigital number, since it uses as much as digits as its factorization.

211222110010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544844699000.

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

Adding to 211222110010111 its reverse (111010011222112), we get a palindrome (322232121232223).

The spelling of 211222110010111 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, ten thousand, one hundred eleven".