20121013113 has 8 divisors (see below), whose sum is σ = 26832485568. Its totient is φ = 13411774704.

The previous prime is 20121013069. The next prime is 20121013117. The reversal of 20121013113 is 31131012102.

It is a happy number.

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

It is not a de Polignac number, because 20121013113 - 2⁶ = 20121013049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121013092 and 20121013101.

It is not an unprimeable number, because it can be changed into a prime (20121013117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537381 + ... + 573602.

It is an arithmetic number, because the mean of its divisors is an integer number (3354060696).

Almost surely, 2^20121013113 is an apocalyptic number.

It is an amenable number.

20121013113 is a deficient number, since it is larger than the sum of its proper divisors (6711472455).

20121013113 is a wasteful number, since it uses less digits than its factorization.

20121013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117023.

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

Adding to 20121013113 its reverse (31131012102), we get a palindrome (51252025215).

The spelling of 20121013113 in words is "twenty billion, one hundred twenty-one million, thirteen thousand, one hundred thirteen".