1204121113 has 6 divisors (see below), whose sum is σ = 1303870974. Its totient is φ = 1111496256.

The previous prime is 1204121111. The next prime is 1204121117. The reversal of 1204121113 is 3111214021.

It can be written as a sum of positive squares in 3 ways, for example, as 39400729 + 1164720384 = 6277^2 + 34128^2 .

It is not a de Polignac number, because 1204121113 - 2¹ = 1204121111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204121111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3562320 + ... + 3562657.

It is an arithmetic number, because the mean of its divisors is an integer number (217311829).

Almost surely, 2^1204121113 is an apocalyptic number.

1204121113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1204121113 is a deficient number, since it is larger than the sum of its proper divisors (99749861).

1204121113 is an equidigital number, since it uses as much as digits as its factorization.

1204121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125003 (or 7124990 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1204121113 is about 34700.4483112250. The cubic root of 1204121113 is about 1063.8736614955.

Adding to 1204121113 its reverse (3111214021), we get a palindrome (4315335134).

The spelling of 1204121113 in words is "one billion, two hundred four million, one hundred twenty-one thousand, one hundred thirteen".