1021200011212 has 12 divisors (see below), whose sum is σ = 1787108654800. Its totient is φ = 510597538416.

The previous prime is 1021200011207. The next prime is 1021200011213. The reversal of 1021200011212 is 2121100021201.

It is a junction number, because it is equal to n+sod(n) for n = 1021200011192 and 1021200011201.

It is not an unprimeable number, because it can be changed into a prime (1021200011213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566914 + ... + 1537462.

Almost surely, 2^{1021200011212} is an apocalyptic number.

It is an amenable number.

1021200011212 is a deficient number, since it is larger than the sum of its proper divisors (765908643588).

1021200011212 is a wasteful number, since it uses less digits than its factorization.

1021200011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233600 (or 1233598 counting only the distinct ones).

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

Adding to 1021200011212 its reverse (2121100021201), we get a palindrome (3142300032413).

The spelling of 1021200011212 in words is "one trillion, twenty-one billion, two hundred million, eleven thousand, two hundred twelve".