211120221212011 has 16 divisors (see below), whose sum is σ = 224076046857984. Its totient is φ = 198224601329664.

The previous prime is 211120221211973. The next prime is 211120221212023. The reversal of 211120221212011 is 110212122021112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211120221212011 - 2¹⁵ = 211120221179243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211120221212011.

It is not an unprimeable number, because it can be changed into a prime (211120221212041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4063590 + ... + 20946436.

It is an arithmetic number, because the mean of its divisors is an integer number (14004752928624).

Almost surely, 2^{211120221212011} is an apocalyptic number.

211120221212011 is a deficient number, since it is larger than the sum of its proper divisors (12955825645973).

211120221212011 is a wasteful number, since it uses less digits than its factorization.

211120221212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16884630.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211120221212011 its reverse (110212122021112), we get a palindrome (321332343233123).

The spelling of 211120221212011 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, eleven".