220211551 has 8 divisors (see below), whose sum is σ = 252568224. Its totient is φ = 188079360.

The previous prime is 220211521. The next prime is 220211561. The reversal of 220211551 is 155112022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220211551 - 2¹³ = 220203359 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 (220211521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54010 + ... + 57943.

It is an arithmetic number, because the mean of its divisors is an integer number (31571028).

Almost surely, 2^220211551 is an apocalyptic number.

220211551 is a deficient number, since it is larger than the sum of its proper divisors (32356673).

220211551 is a wasteful number, since it uses less digits than its factorization.

220211551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112241.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 220211551 is about 14839.5266433940. The cubic root of 220211551 is about 603.8745106824.

Adding to 220211551 its reverse (155112022), we get a palindrome (375323573).

The spelling of 220211551 in words is "two hundred twenty million, two hundred eleven thousand, five hundred fifty-one".