211122020220187 has 2 divisors, whose sum is σ = 211122020220188. Its totient is φ = 211122020220186.

The previous prime is 211122020220157. The next prime is 211122020220211. The reversal of 211122020220187 is 781022020221112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122020220187 is a prime.

It is not a weakly prime, because it can be changed into another prime (211122020220157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561010110093 + 105561010110094.

It is an arithmetic number, because the mean of its divisors is an integer number (105561010110094).

Almost surely, 2^{211122020220187} is an apocalyptic number.

211122020220187 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122020220187 is an equidigital number, since it uses as much as digits as its factorization.

211122020220187 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 31.

Adding to 211122020220187 its reverse (781022020221112), we get a palindrome (992144040441299).

The spelling of 211122020220187 in words is "two hundred eleven trillion, one hundred twenty-two billion, twenty million, two hundred twenty thousand, one hundred eighty-seven".