220212501 has 12 divisors (see below), whose sum is σ = 298524096. Its totient is φ = 144394320.

The previous prime is 220212491. The next prime is 220212521. The reversal of 220212501 is 105212022.

It is not a de Polignac number, because 220212501 - 2⁵ = 220212469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212521) 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 11 ways as a sum of consecutive naturals, for example, 1300 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (24877008).

Almost surely, 2^220212501 is an apocalyptic number.

It is an amenable number.

220212501 is a deficient number, since it is larger than the sum of its proper divisors (78311595).

220212501 is an equidigital number, since it uses as much as digits as its factorization.

220212501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19852 (or 19791 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 220212501 is about 14839.5586524667. The cubic root of 220212501 is about 603.8753790595.

Adding to 220212501 its reverse (105212022), we get a palindrome (325424523).

The spelling of 220212501 in words is "two hundred twenty million, two hundred twelve thousand, five hundred one".