1202002012021 has 2 divisors, whose sum is σ = 1202002012022. Its totient is φ = 1202002012020.

The previous prime is 1202002011997. The next prime is 1202002012049. The reversal of 1202002012021 is 1202102002021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722049570225 + 479952441796 = 849735^2 + 692786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202002012021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202002011992 and 1202002012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202002012721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601001006010 + 601001006011.

It is an arithmetic number, because the mean of its divisors is an integer number (601001006011).

Almost surely, 2^{1202002012021} is an apocalyptic number.

It is an amenable number.

1202002012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202002012021 is an equidigital number, since it uses as much as digits as its factorization.

1202002012021 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.

Adding to 1202002012021 its reverse (1202102002021), we get a palindrome (2404104014042).

The spelling of 1202002012021 in words is "one trillion, two hundred two billion, two million, twelve thousand, twenty-one".