1202202202021 has 2 divisors, whose sum is σ = 1202202202022. Its totient is φ = 1202202202020.

The previous prime is 1202202201973. The next prime is 1202202202039. The reversal of 1202202202021 is 1202022022021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861425296900 + 340776905121 = 928130^2 + 583761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202202202021 - 2²¹ = 1202200104869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202202201986 and 1202202202004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202202206021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601101101010 + 601101101011.

It is an arithmetic number, because the mean of its divisors is an integer number (601101101011).

Almost surely, 2^{1202202202021} is an apocalyptic number.

It is an amenable number.

1202202202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202202202021 is an equidigital number, since it uses as much as digits as its factorization.

1202202202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1202202202021 its reverse (1202022022021), we get a palindrome (2404224224042).

The spelling of 1202202202021 in words is "one trillion, two hundred two billion, two hundred two million, two hundred two thousand, twenty-one".