211211012220011 has 16 divisors (see below), whose sum is σ = 215787962496000. Its totient is φ = 206681828266368.

The previous prime is 211211012219959. The next prime is 211211012220029. The reversal of 211211012220011 is 110022210112112.

It is a cyclic number.

It is not a de Polignac number, because 211211012220011 - 2¹⁴ = 211211012203627 is a prime.

It is a super-2 number, since 2×211211012220011² (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 (211211012820011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184280090 + ... + 185422688.

It is an arithmetic number, because the mean of its divisors is an integer number (13486747656000).

Almost surely, 2^{211211012220011} is an apocalyptic number.

211211012220011 is a deficient number, since it is larger than the sum of its proper divisors (4576950275989).

211211012220011 is a wasteful number, since it uses less digits than its factorization.

211211012220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163498.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211211012220011 its reverse (110022210112112), we get a palindrome (321233222332123).

The spelling of 211211012220011 in words is "two hundred eleven trillion, two hundred eleven billion, twelve million, two hundred twenty thousand, eleven".