1302120011 has 4 divisors (see below), whose sum is σ = 1304265792. Its totient is φ = 1299974232.

The previous prime is 1302119983. The next prime is 1302120013. The reversal of 1302120011 is 1100212031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1302120011 - 2¹⁸ = 1301857867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1302119974 and 1302120001.

It is not an unprimeable number, because it can be changed into a prime (1302120013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071980 + ... + 1073193.

It is an arithmetic number, because the mean of its divisors is an integer number (326066448).

Almost surely, 2^1302120011 is an apocalyptic number.

1302120011 is a deficient number, since it is larger than the sum of its proper divisors (2145781).

1302120011 is an equidigital number, since it uses as much as digits as its factorization.

1302120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145780.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1302120011 is about 36084.9000414301. The cubic root of 1302120011 is about 1091.9858339099.

Adding to 1302120011 its reverse (1100212031), we get a palindrome (2402332042).

The spelling of 1302120011 in words is "one billion, three hundred two million, one hundred twenty thousand, eleven".