545221051211 has 4 divisors (see below), whose sum is σ = 545297752800. Its totient is φ = 545144349624.

The previous prime is 545221051171. The next prime is 545221051213. The reversal of 545221051211 is 112150122545.

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 545221051211 - 2²² = 545216856907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545221051213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38340131 + ... + 38354348.

It is an arithmetic number, because the mean of its divisors is an integer number (136324438200).

Almost surely, 2^545221051211 is an apocalyptic number.

545221051211 is a deficient number, since it is larger than the sum of its proper divisors (76701589).

545221051211 is an equidigital number, since it uses as much as digits as its factorization.

545221051211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76701588.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 545221051211 its reverse (112150122545), we get a palindrome (657371173756).

The spelling of 545221051211 in words is "five hundred forty-five billion, two hundred twenty-one million, fifty-one thousand, two hundred eleven".