1213433203412 has 6 divisors (see below), whose sum is σ = 2123508105978. Its totient is φ = 606716601704.

The previous prime is 1213433203397. The next prime is 1213433203439. The reversal of 1213433203412 is 2143023343121.

It can be written as a sum of positive squares in only one way, i.e., 701902137616 + 511531065796 = 837796^2 + 715214^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151679150423 + ... + 151679150430.

It is an arithmetic number, because the mean of its divisors is an integer number (353918017663).

Almost surely, 2^{1213433203412} is an apocalyptic number.

It is an amenable number.

1213433203412 is a deficient number, since it is larger than the sum of its proper divisors (910074902566).

1213433203412 is a wasteful number, since it uses less digits than its factorization.

1213433203412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303358300857 (or 303358300855 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 1213433203412 its reverse (2143023343121), we get a palindrome (3356456546533).

The spelling of 1213433203412 in words is "one trillion, two hundred thirteen billion, four hundred thirty-three million, two hundred three thousand, four hundred twelve".