221012110220 has 24 divisors (see below), whose sum is σ = 506318653008. Its totient is φ = 80368040000.

The previous prime is 221012110217. The next prime is 221012110259. The reversal of 221012110220 is 22011210122.

It is a super-3 number, since 3×221012110220³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221012110195 and 221012110204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502300031 + ... + 502300470.

It is an arithmetic number, because the mean of its divisors is an integer number (21096610542).

Almost surely, 2^221012110220 is an apocalyptic number.

221012110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221012110220 is an abundant number, since it is smaller than the sum of its proper divisors (285306542788).

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

221012110220 is a wasteful number, since it uses less digits than its factorization.

221012110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004600521 (or 1004600519 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221012110220 its reverse (22011210122), we get a palindrome (243023320342).

The spelling of 221012110220 in words is "two hundred twenty-one billion, twelve million, one hundred ten thousand, two hundred twenty".