110212012111021 has 4 divisors (see below), whose sum is σ = 111607100872000. Its totient is φ = 108816923350044.

The previous prime is 110212012110917. The next prime is 110212012111063. The reversal of 110212012111021 is 120111210212011.

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 110212012111021 - 2¹⁵ = 110212012078253 is a prime.

It is a super-3 number, since 3×110212012111021³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110212012110986 and 110212012111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212012112021) 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, 697544380371 + ... + 697544380528.

It is an arithmetic number, because the mean of its divisors is an integer number (27901775218000).

Almost surely, 2^{110212012111021} is an apocalyptic number.

It is an amenable number.

110212012111021 is a deficient number, since it is larger than the sum of its proper divisors (1395088760979).

110212012111021 is an equidigital number, since it uses as much as digits as its factorization.

110212012111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395088760978.

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

Adding to 110212012111021 its reverse (120111210212011), we get a palindrome (230323222323032).

The spelling of 110212012111021 in words is "one hundred ten trillion, two hundred twelve billion, twelve million, one hundred eleven thousand, twenty-one".