1331212646061 has 24 divisors (see below), whose sum is σ = 1960629390720. Its totient is φ = 870069728736.

The previous prime is 1331212646059. The next prime is 1331212646117. The reversal of 1331212646061 is 1606462121331.

1331212646061 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 2 + 1 + 2 + 646 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 1331212646061 - 2¹ = 1331212646059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331212646761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 428761 + ... + 1687086.

It is an arithmetic number, because the mean of its divisors is an integer number (81692891280).

Almost surely, 2^{1331212646061} is an apocalyptic number.

It is an amenable number.

1331212646061 is a deficient number, since it is larger than the sum of its proper divisors (629416744659).

1331212646061 is a wasteful number, since it uses less digits than its factorization.

1331212646061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117225 (or 2117222 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 1331212646061 its reverse (1606462121331), we get a palindrome (2937674767392).

The spelling of 1331212646061 in words is "one trillion, three hundred thirty-one billion, two hundred twelve million, six hundred forty-six thousand, sixty-one".