21112002203 has 8 divisors (see below), whose sum is σ = 21629010480. Its totient is φ = 20595093120.

The previous prime is 21112002193. The next prime is 21112002221. The reversal of 21112002203 is 30220021112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21112002203 - 2¹⁶ = 21111936667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112002253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590543 + ... + 625271.

It is an arithmetic number, because the mean of its divisors is an integer number (2703626310).

Almost surely, 2^21112002203 is an apocalyptic number.

21112002203 is a deficient number, since it is larger than the sum of its proper divisors (517008277).

21112002203 is a wasteful number, since it uses less digits than its factorization.

21112002203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49597.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21112002203 its reverse (30220021112), we get a palindrome (51332023315).

The spelling of 21112002203 in words is "twenty-one billion, one hundred twelve million, two thousand, two hundred three".