1301212305 has 24 divisors (see below), whose sum is σ = 2262274560. Its totient is φ = 691875360.

The previous prime is 1301212303. The next prime is 1301212309. The reversal of 1301212305 is 5032121031.

1301212305 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1301212305 - 2¹ = 1301212303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1301212303) 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, 28785 + ... + 58574.

It is an arithmetic number, because the mean of its divisors is an integer number (94261440).

Almost surely, 2^1301212305 is an apocalyptic number.

1301212305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1301212305 is a deficient number, since it is larger than the sum of its proper divisors (961062255).

1301212305 is a wasteful number, since it uses less digits than its factorization.

1301212305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87701 (or 87698 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1301212305 is about 36072.3204826083. The cubic root of 1301212305 is about 1091.7320343379.

Adding to 1301212305 its reverse (5032121031), we get a palindrome (6333333336).

The spelling of 1301212305 in words is "one billion, three hundred one million, two hundred twelve thousand, three hundred five".