1131212013321 has 48 divisors (see below), whose sum is σ = 1663932624000. Its totient is φ = 683139764736.

The previous prime is 1131212013313. The next prime is 1131212013367. The reversal of 1131212013321 is 1233102121311.

It is not a de Polignac number, because 1131212013321 - 2³ = 1131212013313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131212013301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7288395 + ... + 7441983.

It is an arithmetic number, because the mean of its divisors is an integer number (34665263000).

Almost surely, 2^{1131212013321} is an apocalyptic number.

It is an amenable number.

1131212013321 is a deficient number, since it is larger than the sum of its proper divisors (532720610679).

1131212013321 is a wasteful number, since it uses less digits than its factorization.

1131212013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153890 (or 153877 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1131212013321 its reverse (1233102121311), we get a palindrome (2364314134632).

The spelling of 1131212013321 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, thirteen thousand, three hundred twenty-one".