1213012023312 has 40 divisors (see below), whose sum is σ = 3141276093280. Its totient is φ = 403348734720.

The previous prime is 1213012023263. The next prime is 1213012023313. The reversal of 1213012023312 is 2133202103121.

It is not an unprimeable number, because it can be changed into a prime (1213012023313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30874114 + ... + 30913377.

It is an arithmetic number, because the mean of its divisors is an integer number (78531902332).

Almost surely, 2^{1213012023312} is an apocalyptic number.

1213012023312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213012023312 is an abundant number, since it is smaller than the sum of its proper divisors (1928264069968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213012023312 is a wasteful number, since it uses less digits than its factorization.

1213012023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61787911 (or 61787905 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213012023312 its reverse (2133202103121), we get a palindrome (3346214126433).

The spelling of 1213012023312 in words is "one trillion, two hundred thirteen billion, twelve million, twenty-three thousand, three hundred twelve".