202120001287 has 2 divisors, whose sum is σ = 202120001288. Its totient is φ = 202120001286.

The previous prime is 202120001191. The next prime is 202120001299. The reversal of 202120001287 is 782100021202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202120001287 - 2⁷ = 202120001159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202120001087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060000643 + 101060000644.

It is an arithmetic number, because the mean of its divisors is an integer number (101060000644).

Almost surely, 2^202120001287 is an apocalyptic number.

202120001287 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120001287 is an equidigital number, since it uses as much as digits as its factorization.

202120001287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 202120001287 its reverse (782100021202), we get a palindrome (984220022489).

The spelling of 202120001287 in words is "two hundred two billion, one hundred twenty million, one thousand, two hundred eighty-seven".