10121133331 has 4 divisors (see below), whose sum is σ = 10121334552. Its totient is φ = 10120932112.

The previous prime is 10121133329. The next prime is 10121133349. The reversal of 10121133331 is 13333112101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10121133331 - 2¹ = 10121133329 is a prime.

It is a super-2 number, since 2×10121133331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121133299 and 10121133308.

It is not an unprimeable number, because it can be changed into a prime (10121133391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48636 + ... + 150358.

It is an arithmetic number, because the mean of its divisors is an integer number (2530333638).

Almost surely, 2^10121133331 is an apocalyptic number.

10121133331 is a deficient number, since it is larger than the sum of its proper divisors (201221).

10121133331 is an equidigital number, since it uses as much as digits as its factorization.

10121133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201220.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 10121133331 its reverse (13333112101), we get a palindrome (23454245432).

The spelling of 10121133331 in words is "ten billion, one hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".