10121231331 has 12 divisors (see below), whose sum is σ = 14688846120. Its totient is φ = 6715507680.

The previous prime is 10121231321. The next prime is 10121231357. The reversal of 10121231331 is 13313212101.

10121231331 is a `hidden beast` number, since 101 + 2 + 1 + 231 + 331 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-10121231331 is a prime.

It is a super-2 number, since 2×10121231331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10121231321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2662986 + ... + 2666783.

It is an arithmetic number, because the mean of its divisors is an integer number (1224070510).

Almost surely, 2^10121231331 is an apocalyptic number.

10121231331 is a deficient number, since it is larger than the sum of its proper divisors (4567614789).

10121231331 is a wasteful number, since it uses less digits than its factorization.

10121231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329986 (or 5329983 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 10121231331 its reverse (13313212101), we get a palindrome (23434443432).

The spelling of 10121231331 in words is "ten billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred thirty-one".