10221010111111 has 4 divisors (see below), whose sum is σ = 10221017256424. Its totient is φ = 10221002965800.

The previous prime is 10221010111043. The next prime is 10221010111121. The reversal of 10221010111111 is 11111101012201.

10221010111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10221010111111 - 2⁹ = 10221010110599 is a prime.

It is a super-3 number, since 3×10221010111111³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221010111091 and 10221010111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221010111121) 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, 605625 + ... + 4561666.

It is an arithmetic number, because the mean of its divisors is an integer number (2555254314106).

Almost surely, 2^{10221010111111} is an apocalyptic number.

10221010111111 is a deficient number, since it is larger than the sum of its proper divisors (7145313).

10221010111111 is an equidigital number, since it uses as much as digits as its factorization.

10221010111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7145312.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10221010111111 its reverse (11111101012201), we get a palindrome (21332111123312).

The spelling of 10221010111111 in words is "ten trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, one hundred eleven".