220401211 has 4 divisors (see below), whose sum is σ = 220554352. Its totient is φ = 220248072.

The previous prime is 220401173. The next prime is 220401221. The reversal of 220401211 is 112104022.

It is a happy number.

220401211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112104022 = 2 ⋅56052011.

It is a cyclic number.

It is not a de Polignac number, because 220401211 - 2¹¹ = 220399163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220401191 and 220401200.

It is not an unprimeable number, because it can be changed into a prime (220401221) 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, 74391 + ... + 77296.

It is an arithmetic number, because the mean of its divisors is an integer number (55138588).

Almost surely, 2^220401211 is an apocalyptic number.

220401211 is a deficient number, since it is larger than the sum of its proper divisors (153141).

220401211 is a wasteful number, since it uses less digits than its factorization.

220401211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153140.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 220401211 is about 14845.9156336010. The cubic root of 220401211 is about 604.0478258038.

Adding to 220401211 its reverse (112104022), we get a palindrome (332505233).

The spelling of 220401211 in words is "two hundred twenty million, four hundred one thousand, two hundred eleven".