1202002212221 has 2 divisors, whose sum is σ = 1202002212222. Its totient is φ = 1202002212220.

The previous prime is 1202002212199. The next prime is 1202002212223. The reversal of 1202002212221 is 1222122002021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948313706596 + 253688505625 = 973814^2 + 503675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202002212221 - 2¹⁴ = 1202002195837 is a prime.

Together with 1202002212223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202002212221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202002212223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601001106110 + 601001106111.

It is an arithmetic number, because the mean of its divisors is an integer number (601001106111).

Almost surely, 2^{1202002212221} is an apocalyptic number.

It is an amenable number.

1202002212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202002212221 is an equidigital number, since it uses as much as digits as its factorization.

1202002212221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1202002212221 its reverse (1222122002021), we get a palindrome (2424124214242).

The spelling of 1202002212221 in words is "one trillion, two hundred two billion, two million, two hundred twelve thousand, two hundred twenty-one".