202120221211187 has 2 divisors, whose sum is σ = 202120221211188. Its totient is φ = 202120221211186.

The previous prime is 202120221211043. The next prime is 202120221211199. The reversal of 202120221211187 is 781112122021202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202120221211187 - 2¹⁰ = 202120221210163 is a prime.

It is not a weakly prime, because it can be changed into another prime (202120221213187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060110605593 + 101060110605594.

It is an arithmetic number, because the mean of its divisors is an integer number (101060110605594).

Almost surely, 2^{202120221211187} is an apocalyptic number.

202120221211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120221211187 is an equidigital number, since it uses as much as digits as its factorization.

202120221211187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 32.

Adding to 202120221211187 its reverse (781112122021202), we get a palindrome (983232343232389).

The spelling of 202120221211187 in words is "two hundred two trillion, one hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, one hundred eighty-seven".