11231221012307 has 4 divisors (see below), whose sum is σ = 11618504495520. Its totient is φ = 10843937529096.

The previous prime is 11231221012303. The next prime is 11231221012309. The reversal of 11231221012307 is 70321012213211.

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 11231221012307 - 2² = 11231221012303 is a prime.

It is a super-2 number, since 2×11231221012307² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231221012301) 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, 193641741563 + ... + 193641741620.

It is an arithmetic number, because the mean of its divisors is an integer number (2904626123880).

Almost surely, 2^{11231221012307} is an apocalyptic number.

11231221012307 is a deficient number, since it is larger than the sum of its proper divisors (387283483213).

11231221012307 is an equidigital number, since it uses as much as digits as its factorization.

11231221012307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387283483212.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 11231221012307 its reverse (70321012213211), we get a palindrome (81552233225518).

The spelling of 11231221012307 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty-one million, twelve thousand, three hundred seven".