220472101 has 4 divisors (see below), whose sum is σ = 220944672. Its totient is φ = 219999532.

The previous prime is 220472071. The next prime is 220472183. The reversal of 220472101 is 101274022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220472101 - 2⁵ = 220472069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220472401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235585 + ... + 236518.

It is an arithmetic number, because the mean of its divisors is an integer number (55236168).

Almost surely, 2^220472101 is an apocalyptic number.

It is an amenable number.

220472101 is a deficient number, since it is larger than the sum of its proper divisors (472571).

220472101 is an equidigital number, since it uses as much as digits as its factorization.

220472101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472570.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 220472101 is about 14848.3029670060. The cubic root of 220472101 is about 604.1125809837.

It can be divided in two parts, 2204 and 72101, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 220472101 in words is "two hundred twenty million, four hundred seventy-two thousand, one hundred one".