1201212001012 has 6 divisors (see below), whose sum is σ = 2102121001778. Its totient is φ = 600606000504.

The previous prime is 1201212000971. The next prime is 1201212001049. The reversal of 1201212001012 is 2101002121021.

It can be written as a sum of positive squares in only one way, i.e., 1065201511396 + 136010489616 = 1032086^2 + 368796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201212000983 and 1201212001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150151500123 + ... + 150151500130.

Almost surely, 2^{1201212001012} is an apocalyptic number.

It is an amenable number.

1201212001012 is a deficient number, since it is larger than the sum of its proper divisors (900909000766).

1201212001012 is a wasteful number, since it uses less digits than its factorization.

1201212001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300303000257 (or 300303000255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201212001012 its reverse (2101002121021), we get a palindrome (3302214122033).

The spelling of 1201212001012 in words is "one trillion, two hundred one billion, two hundred twelve million, one thousand, twelve".