1002201121291 has 2 divisors, whose sum is σ = 1002201121292. Its totient is φ = 1002201121290.

The previous prime is 1002201121127. The next prime is 1002201121301. The reversal of 1002201121291 is 1921211022001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002201121291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002201121391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501100560645 + 501100560646.

It is an arithmetic number, because the mean of its divisors is an integer number (501100560646).

Almost surely, 2^{1002201121291} is an apocalyptic number.

1002201121291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002201121291 is an equidigital number, since it uses as much as digits as its factorization.

1002201121291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 1002201121291 its reverse (1921211022001), we get a palindrome (2923412143292).

The spelling of 1002201121291 in words is "one trillion, two billion, two hundred one million, one hundred twenty-one thousand, two hundred ninety-one".