100011221020111 has 16 divisors (see below), whose sum is σ = 105969511094400. Its totient is φ = 94061318750208.

The previous prime is 100011221020097. The next prime is 100011221020133. The reversal of 100011221020111 is 111020122110001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100011221020111 - 2¹¹ = 100011221018063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100011221020091 and 100011221020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011221024111) 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, 135798970 + ... + 136533448.

It is an arithmetic number, because the mean of its divisors is an integer number (6623094443400).

Almost surely, 2^{100011221020111} is an apocalyptic number.

100011221020111 is a deficient number, since it is larger than the sum of its proper divisors (5958290074289).

100011221020111 is a wasteful number, since it uses less digits than its factorization.

100011221020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740178.

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

Adding to 100011221020111 its reverse (111020122110001), we get a palindrome (211031343130112).

The spelling of 100011221020111 in words is "one hundred trillion, eleven billion, two hundred twenty-one million, twenty thousand, one hundred eleven".