1200212022221 has 8 divisors (see below), whose sum is σ = 1203982701600. Its totient is φ = 1196443238832.

The previous prime is 1200212022187. The next prime is 1200212022239. The reversal of 1200212022221 is 1222202120021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200212022221 - 2³⁰ = 1199138280397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200212022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200212022271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799406 + ... + 1743408.

It is an arithmetic number, because the mean of its divisors is an integer number (150497837700).

Almost surely, 2^{1200212022221} is an apocalyptic number.

It is an amenable number.

1200212022221 is a deficient number, since it is larger than the sum of its proper divisors (3770679379).

1200212022221 is an equidigital number, since it uses as much as digits as its factorization.

1200212022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947995.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1200212022221 its reverse (1222202120021), we get a palindrome (2422414142242).

The spelling of 1200212022221 in words is "one trillion, two hundred billion, two hundred twelve million, twenty-two thousand, two hundred twenty-one".