10131203121 has 32 divisors (see below), whose sum is σ = 14715391488. Its totient is φ = 6162739200.

The previous prime is 10131203107. The next prime is 10131203141. The reversal of 10131203121 is 12130213101.

It is a happy number.

It is not a de Polignac number, because 10131203121 - 2⁷ = 10131202993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10131203121.

It is not an unprimeable number, because it can be changed into a prime (10131203141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5624421 + ... + 5626221.

It is an arithmetic number, because the mean of its divisors is an integer number (459855984).

Almost surely, 2^10131203121 is an apocalyptic number.

It is an amenable number.

10131203121 is a deficient number, since it is larger than the sum of its proper divisors (4584188367).

10131203121 is a wasteful number, since it uses less digits than its factorization.

10131203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10131203121 its reverse (12130213101), we get a palindrome (22261416222).

The spelling of 10131203121 in words is "ten billion, one hundred thirty-one million, two hundred three thousand, one hundred twenty-one".