201211222220011 has 4 divisors (see below), whose sum is σ = 211801286547400. Its totient is φ = 190621157892624.

The previous prime is 201211222219993. The next prime is 201211222220017. The reversal of 201211222220011 is 110022222112102.

201211222220011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201211222220011 - 2⁷ = 201211222219883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 10590064327369 = 201211222220011 / (2 + 0 + 1 + 2 + 1 + 1 + 2 + 2 + 2 + 2 + 2 + 0 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201211222220017) 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, 5295032163666 + ... + 5295032163703.

It is an arithmetic number, because the mean of its divisors is an integer number (52950321636850).

Almost surely, 2^{201211222220011} is an apocalyptic number.

201211222220011 is a deficient number, since it is larger than the sum of its proper divisors (10590064327389).

201211222220011 is a wasteful number, since it uses less digits than its factorization.

201211222220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590064327388.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201211222220011 its reverse (110022222112102), we get a palindrome (311233444332113).

The spelling of 201211222220011 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, eleven".