1202021133221 has 2 divisors, whose sum is σ = 1202021133222. Its totient is φ = 1202021133220.

The previous prime is 1202021133179. The next prime is 1202021133281. The reversal of 1202021133221 is 1223311202021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992155444900 + 209865688321 = 996070^2 + 458111^2 .

It is an emirp because it is prime and its reverse (1223311202021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202021133221 - 2¹⁰ = 1202021132197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202021133193 and 1202021133202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202021133281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010566610 + 601010566611.

It is an arithmetic number, because the mean of its divisors is an integer number (601010566611).

Almost surely, 2^{1202021133221} is an apocalyptic number.

It is an amenable number.

1202021133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202021133221 is an equidigital number, since it uses as much as digits as its factorization.

1202021133221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1202021133221 its reverse (1223311202021), we get a palindrome (2425332335242).

The spelling of 1202021133221 in words is "one trillion, two hundred two billion, twenty-one million, one hundred thirty-three thousand, two hundred twenty-one".