1200212223021 has 12 divisors (see below), whose sum is σ = 1981302717472. Its totient is φ = 685835555976.

The previous prime is 1200212222969. The next prime is 1200212223029. The reversal of 1200212223021 is 1203222120021.

1200212223021 is a `hidden beast` number, since 1 + 200 + 212 + 2 + 230 + 21 = 666.

It is not a de Polignac number, because 1200212223021 - 2⁷ = 1200212222893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200212222985 and 1200212223003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200212223029) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 9525493771 + ... + 9525493896.

Almost surely, 2^{1200212223021} is an apocalyptic number.

It is an amenable number.

1200212223021 is a deficient number, since it is larger than the sum of its proper divisors (781090494451).

1200212223021 is a wasteful number, since it uses less digits than its factorization.

1200212223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050987680 (or 19050987677 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1200212223021 its reverse (1203222120021), we get a palindrome (2403434343042).

The spelling of 1200212223021 in words is "one trillion, two hundred billion, two hundred twelve million, two hundred twenty-three thousand, twenty-one".