1300100121 has 12 divisors (see below), whose sum is σ = 1887457572. Its totient is φ = 862332576.

The previous prime is 1300100111. The next prime is 1300100129. The reversal of 1300100121 is 1210010031.

It can be written as a sum of positive squares in 2 ways, for example, as 862244496 + 437855625 = 29364^2 + 20925^2 .

It is not a de Polignac number, because 1300100121 - 2⁶ = 1300100057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1300100129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364866 + ... + 368411.

It is an arithmetic number, because the mean of its divisors is an integer number (157288131).

Almost surely, 2^1300100121 is an apocalyptic number.

It is an amenable number.

1300100121 is a deficient number, since it is larger than the sum of its proper divisors (587357451).

1300100121 is a wasteful number, since it uses less digits than its factorization.

1300100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733480 (or 733477 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1300100121 is about 36056.9011563667. The cubic root of 1300100121 is about 1091.4209006359.

Adding to 1300100121 its reverse (1210010031), we get a palindrome (2510110152).

The spelling of 1300100121 in words is "one billion, three hundred million, one hundred thousand, one hundred twenty-one".