21133211203 has 12 divisors (see below), whose sum is σ = 22887988608. Its totient is φ = 19504087200.

The previous prime is 21133211201. The next prime is 21133211251. The reversal of 21133211203 is 30211233112.

It is not a de Polignac number, because 21133211203 - 2¹ = 21133211201 is a prime.

It is a super-2 number, since 2×21133211203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133211201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1800253 + ... + 1811953.

It is an arithmetic number, because the mean of its divisors is an integer number (1907332384).

Almost surely, 2^21133211203 is an apocalyptic number.

21133211203 is a deficient number, since it is larger than the sum of its proper divisors (1754777405).

21133211203 is a wasteful number, since it uses less digits than its factorization.

21133211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22414 (or 22401 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21133211203 its reverse (30211233112), we get a palindrome (51344444315).

The spelling of 21133211203 in words is "twenty-one billion, one hundred thirty-three million, two hundred eleven thousand, two hundred three".