211123022086 has 4 divisors (see below), whose sum is σ = 316684533132. Its totient is φ = 105561511042.

The previous prime is 211123022081. The next prime is 211123022087. The reversal of 211123022086 is 680220321112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211123022081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780755520 + ... + 52780755523.

It is an arithmetic number, because the mean of its divisors is an integer number (79171133283).

Almost surely, 2^211123022086 is an apocalyptic number.

211123022086 is a deficient number, since it is larger than the sum of its proper divisors (105561511046).

211123022086 is a wasteful number, since it uses less digits than its factorization.

211123022086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105561511045.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 211123022086 its reverse (680220321112), we get a palindrome (891343343198).

The spelling of 211123022086 in words is "two hundred eleven billion, one hundred twenty-three million, twenty-two thousand, eighty-six".