211350340220087 has 2 divisors, whose sum is σ = 211350340220088. Its totient is φ = 211350340220086.

The previous prime is 211350340220039. The next prime is 211350340220231. The reversal of 211350340220087 is 780022043053112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211350340220087 - 2²⁶ = 211350273111223 is a prime.

It is a super-2 number, since 2×211350340220087² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211350340220087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211350340220387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105675170110043 + 105675170110044.

It is an arithmetic number, because the mean of its divisors is an integer number (105675170110044).

Almost surely, 2^{211350340220087} is an apocalyptic number.

211350340220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211350340220087 is an equidigital number, since it uses as much as digits as its factorization.

211350340220087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

Adding to 211350340220087 its reverse (780022043053112), we get a palindrome (991372383273199).

The spelling of 211350340220087 in words is "two hundred eleven trillion, three hundred fifty billion, three hundred forty million, two hundred twenty thousand, eighty-seven".