10111221011211 has 4 divisors (see below), whose sum is σ = 13481628014952. Its totient is φ = 6740814007472.

The previous prime is 10111221011207. The next prime is 10111221011261. The reversal of 10111221011211 is 11211012211101.

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 10111221011211 - 2² = 10111221011207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10111221011261) 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, 1685203501866 + ... + 1685203501871.

It is an arithmetic number, because the mean of its divisors is an integer number (3370407003738).

Almost surely, 2^{10111221011211} is an apocalyptic number.

10111221011211 is a deficient number, since it is larger than the sum of its proper divisors (3370407003741).

10111221011211 is an equidigital number, since it uses as much as digits as its factorization.

10111221011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370407003740.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 10111221011211 its reverse (11211012211101), we get a palindrome (21322233222312).

The spelling of 10111221011211 in words is "ten trillion, one hundred eleven billion, two hundred twenty-one million, eleven thousand, two hundred eleven".