21112003223012 has 48 divisors (see below), whose sum is σ = 40458343833600. Its totient is φ = 9579979935360.

The previous prime is 21112003222969. The next prime is 21112003223021. The reversal of 21112003223012 is 21032230021112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5615789 + ... + 8588427.

It is an arithmetic number, because the mean of its divisors is an integer number (842882163200).

Almost surely, 2^{21112003223012} is an apocalyptic number.

It is an amenable number.

21112003223012 is a deficient number, since it is larger than the sum of its proper divisors (19346340610588).

21112003223012 is a wasteful number, since it uses less digits than its factorization.

21112003223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974956 (or 2974954 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21112003223012 its reverse (21032230021112), we get a palindrome (42144233244124).

The spelling of 21112003223012 in words is "twenty-one trillion, one hundred twelve billion, three million, two hundred twenty-three thousand, twelve".