221011220210 has 48 divisors (see below), whose sum is σ = 437981342400. Its totient is φ = 80237609760.

The previous prime is 221011220191. The next prime is 221011220239. The reversal of 221011220210 is 12022110122.

It is a super-2 number, since 2×221011220210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601451 + ... + 896529.

It is an arithmetic number, because the mean of its divisors is an integer number (9124611300).

Almost surely, 2^221011220210 is an apocalyptic number.

221011220210 is a deficient number, since it is larger than the sum of its proper divisors (216970122190).

221011220210 is a wasteful number, since it uses less digits than its factorization.

221011220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295727 (or 295716 counting only the distinct ones).

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

Adding to 221011220210 its reverse (12022110122), we get a palindrome (233033330332).

It can be divided in two parts, 2210112 and 20210, that added together give a palindrome (2230322).

The spelling of 221011220210 in words is "two hundred twenty-one billion, eleven million, two hundred twenty thousand, two hundred ten".