1321432134206 has 4 divisors (see below), whose sum is σ = 1982148201312. Its totient is φ = 660716067102.

The previous prime is 1321432134101. The next prime is 1321432134233. The reversal of 1321432134206 is 6024312341231.

It is a semiprime because it is the product of two primes.

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, 330358033550 + ... + 330358033553.

It is an arithmetic number, because the mean of its divisors is an integer number (495537050328).

Almost surely, 2^{1321432134206} is an apocalyptic number.

1321432134206 is a deficient number, since it is larger than the sum of its proper divisors (660716067106).

1321432134206 is an equidigital number, since it uses as much as digits as its factorization.

1321432134206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660716067105.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 1321432134206 its reverse (6024312341231), we get a palindrome (7345744475437).

The spelling of 1321432134206 in words is "one trillion, three hundred twenty-one billion, four hundred thirty-two million, one hundred thirty-four thousand, two hundred six".