111012211221101 has 4 divisors (see below), whose sum is σ = 111102391735104. Its totient is φ = 110922030707100.

The previous prime is 111012211221091. The next prime is 111012211221103. The reversal of 111012211221101 is 101122112210111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012211221101 is a prime.

It is a super-2 number, since 2×111012211221101² (a number of 29 digits) contains 22 as substring.

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 111012211221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012211221103) 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, 45090255155 + ... + 45090257616.

It is an arithmetic number, because the mean of its divisors is an integer number (27775597933776).

Almost surely, 2^{111012211221101} is an apocalyptic number.

It is an amenable number.

111012211221101 is a deficient number, since it is larger than the sum of its proper divisors (90180514003).

111012211221101 is an equidigital number, since it uses as much as digits as its factorization.

111012211221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90180514002.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111012211221101 its reverse (101122112210111), we get a palindrome (212134323431212).

The spelling of 111012211221101 in words is "one hundred eleven trillion, twelve billion, two hundred eleven million, two hundred twenty-one thousand, one hundred one".