21112212000203 has 4 divisors (see below), whose sum is σ = 21112918904280. Its totient is φ = 21111505096128.

The previous prime is 21112212000181. The next prime is 21112212000221. The reversal of 21112212000203 is 30200021221112.

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

It is a cyclic number.

It is not a de Polignac number, because 21112212000203 - 2¹² = 21112211996107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112212000233) 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, 353407238 + ... + 353466971.

It is an arithmetic number, because the mean of its divisors is an integer number (5278229726070).

Almost surely, 2^{21112212000203} is an apocalyptic number.

21112212000203 is a deficient number, since it is larger than the sum of its proper divisors (706904077).

21112212000203 is an equidigital number, since it uses as much as digits as its factorization.

21112212000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706904076.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21112212000203 its reverse (30200021221112), we get a palindrome (51312233221315).

The spelling of 21112212000203 in words is "twenty-one trillion, one hundred twelve billion, two hundred twelve million, two hundred three", and thus it is an aban number.