221030220100 has 72 divisors (see below), whose sum is σ = 501073429248. Its totient is φ = 84529142400.

The previous prime is 221030220079. The next prime is 221030220109. The reversal of 221030220100 is 1022030122.

It is not an unprimeable number, because it can be changed into a prime (221030220109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172219 + ... + 686818.

It is an arithmetic number, because the mean of its divisors is an integer number (6959353184).

Almost surely, 2^221030220100 is an apocalyptic number.

221030220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221030220100 is an abundant number, since it is smaller than the sum of its proper divisors (280043209148).

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

221030220100 is a wasteful number, since it uses less digits than its factorization.

221030220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859165 (or 859158 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 221030220100 its reverse (1022030122), we get a palindrome (222052250222).

The spelling of 221030220100 in words is "two hundred twenty-one billion, thirty million, two hundred twenty thousand, one hundred".