1331202021306 has 32 divisors (see below), whose sum is σ = 2726014441920. Its totient is φ = 433145107584.

The previous prime is 1331202021299. The next prime is 1331202021341. The reversal of 1331202021306 is 6031202021331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1188265 + ... + 2018508.

It is an arithmetic number, because the mean of its divisors is an integer number (85187951310).

Almost surely, 2^{1331202021306} is an apocalyptic number.

1331202021306 is an abundant number, since it is smaller than the sum of its proper divisors (1394812420614).

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

1331202021306 is a wasteful number, since it uses less digits than its factorization.

1331202021306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208430.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1331202021306 its reverse (6031202021331), we get a palindrome (7362404042637).

The spelling of 1331202021306 in words is "one trillion, three hundred thirty-one billion, two hundred two million, twenty-one thousand, three hundred six".