211001002087 has 2 divisors, whose sum is σ = 211001002088. Its totient is φ = 211001002086.

The previous prime is 211001002063. The next prime is 211001002129. The reversal of 211001002087 is 780200100112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211001002087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211001002027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500501043 + 105500501044.

It is an arithmetic number, because the mean of its divisors is an integer number (105500501044).

Almost surely, 2^211001002087 is an apocalyptic number.

211001002087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001002087 is an equidigital number, since it uses as much as digits as its factorization.

211001002087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 211001002087 its reverse (780200100112), we get a palindrome (991201102199).

The spelling of 211001002087 in words is "two hundred eleven billion, one million, two thousand, eighty-seven".