10000221211111 has 4 divisors (see below), whose sum is σ = 10001851776712. Its totient is φ = 9998590645512.

The previous prime is 10000221211073. The next prime is 10000221211157. The reversal of 10000221211111 is 11111212200001.

It is a happy number.

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 10000221211111 - 2⁹ = 10000221210599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000221211091 and 10000221211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000221211511) 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, 815273601 + ... + 815285866.

It is an arithmetic number, because the mean of its divisors is an integer number (2500462944178).

Almost surely, 2^{10000221211111} is an apocalyptic number.

10000221211111 is a deficient number, since it is larger than the sum of its proper divisors (1630565601).

10000221211111 is an equidigital number, since it uses as much as digits as its factorization.

10000221211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630565600.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10000221211111 its reverse (11111212200001), we get a palindrome (21111433411112).

The spelling of 10000221211111 in words is "ten trillion, two hundred twenty-one million, two hundred eleven thousand, one hundred eleven".