1331203311212 has 6 divisors (see below), whose sum is σ = 2329605794628. Its totient is φ = 665601655604.

The previous prime is 1331203311203. The next prime is 1331203311241. The reversal of 1331203311212 is 2121133021331.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166400413898 + ... + 166400413905.

It is an arithmetic number, because the mean of its divisors is an integer number (388267632438).

Almost surely, 2^{1331203311212} is an apocalyptic number.

It is an amenable number.

1331203311212 is a deficient number, since it is larger than the sum of its proper divisors (998402483416).

1331203311212 is a wasteful number, since it uses less digits than its factorization.

1331203311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332800827807 (or 332800827805 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331203311212 its reverse (2121133021331), we get a palindrome (3452336332543).

The spelling of 1331203311212 in words is "one trillion, three hundred thirty-one billion, two hundred three million, three hundred eleven thousand, two hundred twelve".