1201021201012 has 6 divisors (see below), whose sum is σ = 2101787101778. Its totient is φ = 600510600504.

The previous prime is 1201021200991. The next prime is 1201021201063. The reversal of 1201021201012 is 2101021201021.

It can be written as a sum of positive squares in only one way, i.e., 1101773519716 + 99247681296 = 1049654^2 + 315036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201021200983 and 1201021201001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150127650123 + ... + 150127650130.

Almost surely, 2^{1201021201012} is an apocalyptic number.

It is an amenable number.

1201021201012 is a deficient number, since it is larger than the sum of its proper divisors (900765900766).

1201021201012 is a wasteful number, since it uses less digits than its factorization.

1201021201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300255300257 (or 300255300255 counting only the distinct ones).

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

Adding to 1201021201012 its reverse (2101021201021), we get a palindrome (3302042402033).

Subtracting 1201021201012 from its reverse (2101021201021), we obtain a palindrome (900000000009).

The spelling of 1201021201012 in words is "one trillion, two hundred one billion, twenty-one million, two hundred one thousand, twelve".