20121331233113 has 8 divisors (see below), whose sum is σ = 22065467475456. Its totient is φ = 18196349042800.

The previous prime is 20121331233103. The next prime is 20121331233121. The reversal of 20121331233113 is 31133213312102.

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

It is a cyclic number.

It is not a de Polignac number, because 20121331233113 - 2⁶ = 20121331233049 is a prime.

It is a super-2 number, since 2×20121331233113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121331233103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4788510806 + ... + 4788515007.

It is an arithmetic number, because the mean of its divisors is an integer number (2758183434432).

Almost surely, 2^{20121331233113} is an apocalyptic number.

It is an amenable number.

20121331233113 is a deficient number, since it is larger than the sum of its proper divisors (1944136242343).

20121331233113 is a wasteful number, since it uses less digits than its factorization.

20121331233113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577026015.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 20121331233113 its reverse (31133213312102), we get a palindrome (51254544545215).

The spelling of 20121331233113 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty-one million, two hundred thirty-three thousand, one hundred thirteen".