220221542 has 8 divisors (see below), whose sum is σ = 330410136. Its totient is φ = 110084832.

The previous prime is 220221541. The next prime is 220221583. The reversal of 220221542 is 245122022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221541) 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, 398 + ... + 20990.

It is an arithmetic number, because the mean of its divisors is an integer number (41301267).

Almost surely, 2^220221542 is an apocalyptic number.

220221542 is a deficient number, since it is larger than the sum of its proper divisors (110188594).

220221542 is a wasteful number, since it uses less digits than its factorization.

220221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25942.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 220221542 is about 14839.8632743028. The cubic root of 220221542 is about 603.8836431416.

Adding to 220221542 its reverse (245122022), we get a palindrome (465343564).

The spelling of 220221542 in words is "two hundred twenty million, two hundred twenty-one thousand, five hundred forty-two".