21112111200002 has 16 divisors (see below), whose sum is σ = 31959720228480. Its totient is φ = 10458877304592.

The previous prime is 21112111199981. The next prime is 21112111200029. The reversal of 21112111200002 is 20000211121112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112111200002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5373233 + ... + 8431835.

It is an arithmetic number, because the mean of its divisors is an integer number (1997482514280).

Almost surely, 2^{21112111200002} is an apocalyptic number.

21112111200002 is a deficient number, since it is larger than the sum of its proper divisors (10847609028478).

21112111200002 is a wasteful number, since it uses less digits than its factorization.

21112111200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090377.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112111200002 its reverse (20000211121112), we get a palindrome (41112322321114).

The spelling of 21112111200002 in words is "twenty-one trillion, one hundred twelve billion, one hundred eleven million, two hundred thousand, two".