10121210331 has 4 divisors (see below), whose sum is σ = 13494947112. Its totient is φ = 6747473552.

The previous prime is 10121210311. The next prime is 10121210371. The reversal of 10121210331 is 13301212101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13301212101 = 3 ⋅4433737367.

It is a cyclic number.

It is not a de Polignac number, because 10121210331 - 2¹³ = 10121202139 is a prime.

It is a super-2 number, since 2×10121210331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10121210331.

It is not an unprimeable number, because it can be changed into a prime (10121210311) 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 3 ways as a sum of consecutive naturals, for example, 1686868386 + ... + 1686868391.

It is an arithmetic number, because the mean of its divisors is an integer number (3373736778).

Almost surely, 2^10121210331 is an apocalyptic number.

10121210331 is a deficient number, since it is larger than the sum of its proper divisors (3373736781).

10121210331 is an equidigital number, since it uses as much as digits as its factorization.

10121210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373736780.

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

Adding to 10121210331 its reverse (13301212101), we get a palindrome (23422422432).

The spelling of 10121210331 in words is "ten billion, one hundred twenty-one million, two hundred ten thousand, three hundred thirty-one".