180220011211 has 4 divisors (see below), whose sum is σ = 180223861752. Its totient is φ = 180216160672.

The previous prime is 180220011173. The next prime is 180220011229. The reversal of 180220011211 is 112110022081.

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 180220011211 - 2¹¹ = 180220009163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180220011011) 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, 1854190 + ... + 1948963.

It is an arithmetic number, because the mean of its divisors is an integer number (45055965438).

Almost surely, 2^180220011211 is an apocalyptic number.

180220011211 is a deficient number, since it is larger than the sum of its proper divisors (3850541).

180220011211 is an equidigital number, since it uses as much as digits as its factorization.

180220011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850540.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 180220011211 its reverse (112110022081), we get a palindrome (292330033292).

The spelling of 180220011211 in words is "one hundred eighty billion, two hundred twenty million, eleven thousand, two hundred eleven".