1331220233212 has 12 divisors (see below), whose sum is σ = 2359124464480. Its totient is φ = 657184671936.

The previous prime is 1331220233207. The next prime is 1331220233269. The reversal of 1331220233212 is 2123320221331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2106360813 + ... + 2106361444.

Almost surely, 2^{1331220233212} is an apocalyptic number.

It is an amenable number.

1331220233212 is a deficient number, since it is larger than the sum of its proper divisors (1027904231268).

1331220233212 is a wasteful number, since it uses less digits than its factorization.

1331220233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212722340 (or 4212722338 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1331220233212 its reverse (2123320221331), we get a palindrome (3454540454543).

The spelling of 1331220233212 in words is "one trillion, three hundred thirty-one billion, two hundred twenty million, two hundred thirty-three thousand, two hundred twelve".