211147055107 has 4 divisors (see below), whose sum is σ = 213819802720. Its totient is φ = 208474307496.

The previous prime is 211147055087. The next prime is 211147055131. The reversal of 211147055107 is 701550741112.

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

It is a cyclic number.

It is not a de Polignac number, because 211147055107 - 2²³ = 211138666499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211147055177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336373688 + ... + 1336373845.

It is an arithmetic number, because the mean of its divisors is an integer number (53454950680).

Almost surely, 2^211147055107 is an apocalyptic number.

211147055107 is a deficient number, since it is larger than the sum of its proper divisors (2672747613).

211147055107 is an equidigital number, since it uses as much as digits as its factorization.

211147055107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672747612.

The product of its (nonzero) digits is 9800, while the sum is 34.

Adding to 211147055107 its reverse (701550741112), we get a palindrome (912697796219).

The spelling of 211147055107 in words is "two hundred eleven billion, one hundred forty-seven million, fifty-five thousand, one hundred seven".