100101221111 has 4 divisors (see below), whose sum is σ = 100159795800. Its totient is φ = 100042646424.

The previous prime is 100101221093. The next prime is 100101221167. The reversal of 100101221111 is 111122101001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100101221111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100101221092 and 100101221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101221611) 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, 29284781 + ... + 29288198.

It is an arithmetic number, because the mean of its divisors is an integer number (25039948950).

Almost surely, 2^100101221111 is an apocalyptic number.

100101221111 is a deficient number, since it is larger than the sum of its proper divisors (58574689).

100101221111 is an equidigital number, since it uses as much as digits as its factorization.

100101221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58574688.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100101221111 its reverse (111122101001), we get a palindrome (211223322112).

The spelling of 100101221111 in words is "one hundred billion, one hundred one million, two hundred twenty-one thousand, one hundred eleven".