211445345211 has 8 divisors (see below), whose sum is σ = 298511075664. Its totient is φ = 132671589120.

The previous prime is 211445345207. The next prime is 211445345219. The reversal of 211445345211 is 112543544112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211445345211 - 2² = 211445345207 is a prime.

It is a super-2 number, since 2×211445345211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211445345219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072993530 + ... + 2072993631.

It is an arithmetic number, because the mean of its divisors is an integer number (37313884458).

Almost surely, 2^211445345211 is an apocalyptic number.

211445345211 is a deficient number, since it is larger than the sum of its proper divisors (87065730453).

211445345211 is a wasteful number, since it uses less digits than its factorization.

211445345211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145987181.

The product of its digits is 19200, while the sum is 33.

Adding to 211445345211 its reverse (112543544112), we get a palindrome (323988889323).

The spelling of 211445345211 in words is "two hundred eleven billion, four hundred forty-five million, three hundred forty-five thousand, two hundred eleven".