211112220001 has 4 divisors (see below), whose sum is σ = 211295637504. Its totient is φ = 210928802500.

The previous prime is 211112219993. The next prime is 211112220023. The reversal of 211112220001 is 100022211112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211112220001 - 2³ = 211112219993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112220031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91707025 + ... + 91709326.

It is an arithmetic number, because the mean of its divisors is an integer number (52823909376).

Almost surely, 2^211112220001 is an apocalyptic number.

It is an amenable number.

211112220001 is a deficient number, since it is larger than the sum of its proper divisors (183417503).

211112220001 is a wasteful number, since it uses less digits than its factorization.

211112220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183417502.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211112220001 its reverse (100022211112), we get a palindrome (311134431113).

The spelling of 211112220001 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty thousand, one".