110212001000021 has 4 divisors (see below), whose sum is σ = 110405695202700. Its totient is φ = 110018306797344.

The previous prime is 110212000999981. The next prime is 110212001000053. The reversal of 110212001000021 is 120000100212011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17034101763121 + 93177899236900 = 4127239^2 + 9652870^2 .

It is a cyclic number.

It is not a de Polignac number, because 110212001000021 - 2²² = 110211996805717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110212000999966 and 110212001000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212001000921) 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, 96847100486 + ... + 96847101623.

It is an arithmetic number, because the mean of its divisors is an integer number (27601423800675).

Almost surely, 2^{110212001000021} is an apocalyptic number.

It is an amenable number.

110212001000021 is a deficient number, since it is larger than the sum of its proper divisors (193694202679).

110212001000021 is an equidigital number, since it uses as much as digits as its factorization.

110212001000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193694202678.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110212001000021 its reverse (120000100212011), we get a palindrome (230212101212032).

The spelling of 110212001000021 in words is "one hundred ten trillion, two hundred twelve billion, one million, twenty-one", and thus it is an aban number.