211212201222011 has 8 divisors (see below), whose sum is σ = 230413474222848. Its totient is φ = 192010955521000.

The previous prime is 211212201221999. The next prime is 211212201222017. The reversal of 211212201222011 is 110222102212112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211212201222011 - 2²² = 211212197027707 is a prime.

It is a super-2 number, since 2×211212201222011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212201222017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11488466 + ... + 23545896.

It is an arithmetic number, because the mean of its divisors is an integer number (28801684277856).

Almost surely, 2^{211212201222011} is an apocalyptic number.

211212201222011 is a deficient number, since it is larger than the sum of its proper divisors (19201273000837).

211212201222011 is a wasteful number, since it uses less digits than its factorization.

211212201222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13649913.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211212201222011 its reverse (110222102212112), we get a palindrome (321434303434123).

The spelling of 211212201222011 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred one million, two hundred twenty-two thousand, eleven".