211222002011 has 4 divisors (see below), whose sum is σ = 211412464800. Its totient is φ = 211031539224.

The previous prime is 211222002007. The next prime is 211222002113. The reversal of 211222002011 is 110200222112.

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 211222002011 - 2² = 211222002007 is a prime.

It is a super-2 number, since 2×211222002011² (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 (211222002001) 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, 95229731 + ... + 95231948.

It is an arithmetic number, because the mean of its divisors is an integer number (52853116200).

Almost surely, 2^211222002011 is an apocalyptic number.

211222002011 is a deficient number, since it is larger than the sum of its proper divisors (190462789).

211222002011 is a wasteful number, since it uses less digits than its factorization.

211222002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190462788.

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

Adding to 211222002011 its reverse (110200222112), we get a palindrome (321422224123).

The spelling of 211222002011 in words is "two hundred eleven billion, two hundred twenty-two million, two thousand, eleven".