21122230203 has 6 divisors (see below), whose sum is σ = 30509888084. Its totient is φ = 14081486796.

The previous prime is 21122230201. The next prime is 21122230253. The reversal of 21122230203 is 30203222112.

21122230203 is a `hidden beast` number, since 211 + 22 + 230 + 203 = 666.

It is not a de Polignac number, because 21122230203 - 2¹ = 21122230201 is a prime.

It is a super-2 number, since 2×21122230203² (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 (21122230201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173457225 + ... + 1173457242.

Almost surely, 2^21122230203 is an apocalyptic number.

21122230203 is a deficient number, since it is larger than the sum of its proper divisors (9387657881).

21122230203 is a wasteful number, since it uses less digits than its factorization.

21122230203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346914473 (or 2346914470 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21122230203 its reverse (30203222112), we get a palindrome (51325452315).

The spelling of 21122230203 in words is "twenty-one billion, one hundred twenty-two million, two hundred thirty thousand, two hundred three".