21003200011 has 16 divisors (see below), whose sum is σ = 22263091200. Its totient is φ = 19782100800.

The previous prime is 21003199981. The next prime is 21003200017. The reversal of 21003200011 is 11000230012.

It is a cyclic number.

It is not a de Polignac number, because 21003200011 - 2²³ = 20994811403 is a prime.

It is a super-2 number, since 2×21003200011² (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 (21003200017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512830 + ... + 552268.

It is an arithmetic number, because the mean of its divisors is an integer number (1391443200).

Almost surely, 2^21003200011 is an apocalyptic number.

21003200011 is a deficient number, since it is larger than the sum of its proper divisors (1259891189).

21003200011 is a wasteful number, since it uses less digits than its factorization.

21003200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39930.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21003200011 its reverse (11000230012), we get a palindrome (32003430023).

The spelling of 21003200011 in words is "twenty-one billion, three million, two hundred thousand, eleven".