211101222220011 has 6 divisors (see below), whose sum is σ = 304923987651140. Its totient is φ = 140734148146668.

The previous prime is 211101222219991. The next prime is 211101222220037. The reversal of 211101222220011 is 110022222101112.

211101222220011 is a `hidden beast` number, since 211 + 1 + 0 + 1 + 222 + 220 + 0 + 11 = 666.

It is not a de Polignac number, because 211101222220011 - 2⁹ = 211101222219499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211101222228011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11727845678881 + ... + 11727845678898.

Almost surely, 2^{211101222220011} is an apocalyptic number.

211101222220011 is a deficient number, since it is larger than the sum of its proper divisors (93822765431129).

211101222220011 is a wasteful number, since it uses less digits than its factorization.

211101222220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23455691357785 (or 23455691357782 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211101222220011 its reverse (110022222101112), we get a palindrome (321123444321123).

The spelling of 211101222220011 in words is "two hundred eleven trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, eleven".