1213211301 has 16 divisors (see below), whose sum is σ = 1642665024. Its totient is φ = 796368384.

The previous prime is 1213211297. The next prime is 1213211323. The reversal of 1213211301 is 1031123121.

It is a happy number.

It is not a de Polignac number, because 1213211301 - 2² = 1213211297 is a prime.

It is a super-2 number, since 2×1213211301² = 2943763321748225202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213211501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46746 + ... + 67908.

It is an arithmetic number, because the mean of its divisors is an integer number (102666564).

Almost surely, 2^1213211301 is an apocalyptic number.

It is an amenable number.

1213211301 is a deficient number, since it is larger than the sum of its proper divisors (429453723).

1213211301 is a wasteful number, since it uses less digits than its factorization.

1213211301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21460.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1213211301 is about 34831.1828825838. The cubic root of 1213211301 is about 1066.5440953668.

Adding to 1213211301 its reverse (1031123121), we get a palindrome (2244334422).

The spelling of 1213211301 in words is "one billion, two hundred thirteen million, two hundred eleven thousand, three hundred one".