10021122221111 has 4 divisors (see below), whose sum is σ = 10366678159800. Its totient is φ = 9675566282424.

The previous prime is 10021122221101. The next prime is 10021122221141. The reversal of 10021122221111 is 11112222112001.

10021122221111 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.

It is a cyclic number.

It is not a de Polignac number, because 10021122221111 - 2³⁴ = 10003942351927 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 10021122221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021122221101) 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, 172777969301 + ... + 172777969358.

It is an arithmetic number, because the mean of its divisors is an integer number (2591669539950).

Almost surely, 2^{10021122221111} is an apocalyptic number.

10021122221111 is a deficient number, since it is larger than the sum of its proper divisors (345555938689).

10021122221111 is an equidigital number, since it uses as much as digits as its factorization.

10021122221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345555938688.

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

Adding to 10021122221111 its reverse (11112222112001), we get a palindrome (21133344333112).

It can be divided in two parts, 1002112 and 2221111, that added together give a palindrome (3223223).

The spelling of 10021122221111 in words is "ten trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".