21120131203 has 8 divisors (see below), whose sum is σ = 22512578400. Its totient is φ = 19744360320.

The previous prime is 21120131183. The next prime is 21120131257. The reversal of 21120131203 is 30213102112.

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

It is not a de Polignac number, because 21120131203 - 2¹⁷ = 21120000131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120131303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4166463 + ... + 4171528.

It is an arithmetic number, because the mean of its divisors is an integer number (2814072300).

Almost surely, 2^21120131203 is an apocalyptic number.

21120131203 is a deficient number, since it is larger than the sum of its proper divisors (1392447197).

21120131203 is a wasteful number, since it uses less digits than its factorization.

21120131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338157.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21120131203 its reverse (30213102112), we get a palindrome (51333233315).

The spelling of 21120131203 in words is "twenty-one billion, one hundred twenty million, one hundred thirty-one thousand, two hundred three".