1020121113 has 24 divisors (see below), whose sum is σ = 1516148928. Its totient is φ = 609532000.

The previous prime is 1020121111. The next prime is 1020121133. The reversal of 1020121113 is 3111210201.

1020121113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020121113 - 2¹ = 1020121111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020121111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5983 + ... + 45563.

It is an arithmetic number, because the mean of its divisors is an integer number (63172872).

Almost surely, 2^1020121113 is an apocalyptic number.

It is an amenable number.

1020121113 is a deficient number, since it is larger than the sum of its proper divisors (496027815).

1020121113 is a wasteful number, since it uses less digits than its factorization.

1020121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39677 (or 39666 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1020121113 is about 31939.3348866253. The cubic root of 1020121113 is about 1006.6625495180.

Adding to 1020121113 its reverse (3111210201), we get a palindrome (4131331314).

The spelling of 1020121113 in words is "one billion, twenty million, one hundred twenty-one thousand, one hundred thirteen".