1202110221001 has 2 divisors, whose sum is σ = 1202110221002. Its totient is φ = 1202110221000.

The previous prime is 1202110220951. The next prime is 1202110221007. The reversal of 1202110221001 is 1001220112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922898376976 + 279211844025 = 960676^2 + 528405^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202110221001 - 2³⁹ = 652354407113 is a prime.

It is a super-2 number, since 2×1202110221001² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1202110221007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055110500 + 601055110501.

It is an arithmetic number, because the mean of its divisors is an integer number (601055110501).

Almost surely, 2^{1202110221001} is an apocalyptic number.

It is an amenable number.

1202110221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202110221001 is an equidigital number, since it uses as much as digits as its factorization.

1202110221001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1202110221001 its reverse (1001220112021), we get a palindrome (2203330333022).

The spelling of 1202110221001 in words is "one trillion, two hundred two billion, one hundred ten million, two hundred twenty-one thousand, one".