1300123121 has 4 divisors (see below), whose sum is σ = 1418316144. Its totient is φ = 1181930100.

The previous prime is 1300123091. The next prime is 1300123147. The reversal of 1300123121 is 1213210031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1300123121 - 2²² = 1295928817 is a prime.

It is a super-3 number, since 3×1300123121³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300123096 and 1300123105.

It is not an unprimeable number, because it can be changed into a prime (1300123171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59096495 + ... + 59096516.

It is an arithmetic number, because the mean of its divisors is an integer number (354579036).

Almost surely, 2^1300123121 is an apocalyptic number.

1300123121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1300123121 is a deficient number, since it is larger than the sum of its proper divisors (118193023).

1300123121 is a wasteful number, since it uses less digits than its factorization.

1300123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118193022.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1300123121 is about 36057.2200952874. The cubic root of 1300123121 is about 1091.4273366871.

Adding to 1300123121 its reverse (1213210031), we get a palindrome (2513333152).

It can be divided in two parts, 1300 and 123121, that added together give a palindrome (124421).

The spelling of 1300123121 in words is "one billion, three hundred million, one hundred twenty-three thousand, one hundred twenty-one".