110210012121021 has 4 divisors (see below), whose sum is σ = 146946682828032. Its totient is φ = 73473341414012.

The previous prime is 110210012121017. The next prime is 110210012121023. The reversal of 110210012121021 is 120121210012011.

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 110210012121021 - 2² = 110210012121017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110210012121023) 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, 18368335353501 + ... + 18368335353506.

It is an arithmetic number, because the mean of its divisors is an integer number (36736670707008).

Almost surely, 2^{110210012121021} is an apocalyptic number.

It is an amenable number.

110210012121021 is a deficient number, since it is larger than the sum of its proper divisors (36736670707011).

110210012121021 is an equidigital number, since it uses as much as digits as its factorization.

110210012121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36736670707010.

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

Adding to 110210012121021 its reverse (120121210012011), we get a palindrome (230331222133032).

The spelling of 110210012121021 in words is "one hundred ten trillion, two hundred ten billion, twelve million, one hundred twenty-one thousand, twenty-one".