220221012210 has 32 divisors (see below), whose sum is σ = 556347821760. Its totient is φ = 55634781888.

The previous prime is 220221012173. The next prime is 220221012217. The reversal of 220221012210 is 12210122022.

It is a super-4 number, since 4×220221012210⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 220221012210.

It is not an unprimeable number, because it can be changed into a prime (220221012217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193175757 + ... + 193176896.

It is an arithmetic number, because the mean of its divisors is an integer number (17385869430).

Almost surely, 2^220221012210 is an apocalyptic number.

220221012210 is an abundant number, since it is smaller than the sum of its proper divisors (336126809550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220221012210 is a wasteful number, since it uses less digits than its factorization.

220221012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386352682.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220221012210 its reverse (12210122022), we get a palindrome (232431134232).

The spelling of 220221012210 in words is "two hundred twenty billion, two hundred twenty-one million, twelve thousand, two hundred ten".