1200131321002 has 4 divisors (see below), whose sum is σ = 1800196981506. Its totient is φ = 600065660500.

The previous prime is 1200131320991. The next prime is 1200131321009. The reversal of 1200131321002 is 2001231310021.

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

It can be written as a sum of positive squares in only one way, i.e., 744926074281 + 455205246721 = 863091^2 + 674689^2 .

It is not an unprimeable number, because it can be changed into a prime (1200131321009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300032830249 + ... + 300032830252.

Almost surely, 2^{1200131321002} is an apocalyptic number.

1200131321002 is a deficient number, since it is larger than the sum of its proper divisors (600065660504).

1200131321002 is an equidigital number, since it uses as much as digits as its factorization.

1200131321002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600065660503.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1200131321002 its reverse (2001231310021), we get a palindrome (3201362631023).

The spelling of 1200131321002 in words is "one trillion, two hundred billion, one hundred thirty-one million, three hundred twenty-one thousand, two".