110210112120021 has 4 divisors (see below), whose sum is σ = 146946816160032. Its totient is φ = 73473408080012.

The previous prime is 110210112119999. The next prime is 110210112120023. The reversal of 110210112120021 is 120021211012011.

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 a cyclic number.

It is not a de Polignac number, because 110210112120021 - 2¹³ = 110210112111829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110210112120023) 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, 18368352020001 + ... + 18368352020006.

It is an arithmetic number, because the mean of its divisors is an integer number (36736704040008).

Almost surely, 2^{110210112120021} is an apocalyptic number.

It is an amenable number.

110210112120021 is a deficient number, since it is larger than the sum of its proper divisors (36736704040011).

110210112120021 is an equidigital number, since it uses as much as digits as its factorization.

110210112120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36736704040010.

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

Adding to 110210112120021 its reverse (120021211012011), we get a palindrome (230231323132032).

The spelling of 110210112120021 in words is "one hundred ten trillion, two hundred ten billion, one hundred twelve million, one hundred twenty thousand, twenty-one".