221211021000011 has 16 divisors (see below), whose sum is σ = 252894893991168. Its totient is φ = 189547732519200.

The previous prime is 221211020999987. The next prime is 221211021000037. The reversal of 221211021000011 is 110000120112122.

221211021000011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221211021000011 - 2³⁰ = 221209947258187 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 221211021000011.

It is not an unprimeable number, because it can be changed into a prime (221211021000041) 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, 272755481 + ... + 273565301.

It is an arithmetic number, because the mean of its divisors is an integer number (15805930874448).

Almost surely, 2^{221211021000011} is an apocalyptic number.

221211021000011 is a deficient number, since it is larger than the sum of its proper divisors (31683872991157).

221211021000011 is an equidigital number, since it uses as much as digits as its factorization.

221211021000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822482.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221211021000011 its reverse (110000120112122), we get a palindrome (331211141112133).

The spelling of 221211021000011 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-one million, eleven", and thus it is an aban number.