220205951 has 12 divisors (see below), whose sum is σ = 261610848. Its totient is φ = 184730112.

The previous prime is 220205941. The next prime is 220205971. The reversal of 220205951 is 159502022.

220205951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-220205951 is a prime.

It is a super-4 number, since 4×220205951⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220205951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220205941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45506 + ... + 50111.

It is an arithmetic number, because the mean of its divisors is an integer number (21800904).

Almost surely, 2^220205951 is an apocalyptic number.

220205951 is a deficient number, since it is larger than the sum of its proper divisors (41404897).

220205951 is an equidigital number, since it uses as much as digits as its factorization.

220205951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95678 (or 95671 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 220205951 is about 14839.3379569306. The cubic root of 220205951 is about 603.8693917776.

Adding to 220205951 its reverse (159502022), we get a palindrome (379707973).

The spelling of 220205951 in words is "two hundred twenty million, two hundred five thousand, nine hundred fifty-one".