21202113003 has 16 divisors (see below), whose sum is σ = 28778610432. Its totient is φ = 13880916000.

The previous prime is 21202113001. The next prime is 21202113029. The reversal of 21202113003 is 30031120212.

It is not a de Polignac number, because 21202113003 - 2¹ = 21202113001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202113001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23668 + ... + 207278.

It is an arithmetic number, because the mean of its divisors is an integer number (1798663152).

Almost surely, 2^21202113003 is an apocalyptic number.

21202113003 is a deficient number, since it is larger than the sum of its proper divisors (7576497429).

21202113003 is a wasteful number, since it uses less digits than its factorization.

21202113003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184306.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21202113003 its reverse (30031120212), we get a palindrome (51233233215).

The spelling of 21202113003 in words is "twenty-one billion, two hundred two million, one hundred thirteen thousand, three".