1202104021 has 2 divisors, whose sum is σ = 1202104022. Its totient is φ = 1202104020.

The previous prime is 1202103997. The next prime is 1202104037. The reversal of 1202104021 is 1204012021.

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., 1154300625 + 47803396 = 33975^2 + 6914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202104021 - 2¹⁷ = 1201972949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202103992 and 1202104010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202104091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601052010 + 601052011.

It is an arithmetic number, because the mean of its divisors is an integer number (601052011).

Almost surely, 2^1202104021 is an apocalyptic number.

It is an amenable number.

1202104021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202104021 is an equidigital number, since it uses as much as digits as its factorization.

1202104021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1202104021 is about 34671.3717784572. The cubic root of 1202104021 is about 1063.2792776465.

Adding to 1202104021 its reverse (1204012021), we get a palindrome (2406116042).

The spelling of 1202104021 in words is "one billion, two hundred two million, one hundred four thousand, twenty-one".