110112101220021 has 4 divisors (see below), whose sum is σ = 146816134960032. Its totient is φ = 73408067480012.

The previous prime is 110112101220013. The next prime is 110112101220029. The reversal of 110112101220021 is 120022101211011.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (110112101220013) and next prime (110112101220029).

It is a cyclic number.

It is not a de Polignac number, because 110112101220021 - 2³ = 110112101220013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110112101220029) 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, 18352016870001 + ... + 18352016870006.

It is an arithmetic number, because the mean of its divisors is an integer number (36704033740008).

Almost surely, 2^{110112101220021} is an apocalyptic number.

It is an amenable number.

110112101220021 is a deficient number, since it is larger than the sum of its proper divisors (36704033740011).

110112101220021 is an equidigital number, since it uses as much as digits as its factorization.

110112101220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36704033740010.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 110112101220021 its reverse (120022101211011), we get a palindrome (230134202431032).

The spelling of 110112101220021 in words is "one hundred ten trillion, one hundred twelve billion, one hundred one million, two hundred twenty thousand, twenty-one".