221011220022 has 16 divisors (see below), whose sum is σ = 442030426560. Its totient is φ = 73669075592.

The previous prime is 221011220021. The next prime is 221011220041. The reversal of 221011220022 is 220022110122.

It is a super-2 number, since 2×221011220022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221011219983 and 221011220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011220021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63229 + ... + 667847.

It is an arithmetic number, because the mean of its divisors is an integer number (27626901660).

Almost surely, 2^221011220022 is an apocalyptic number.

221011220022 is an abundant number, since it is smaller than the sum of its proper divisors (221019206538).

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

221011220022 is a wasteful number, since it uses less digits than its factorization.

221011220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665547.

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

Adding to 221011220022 its reverse (220022110122), we get a palindrome (441033330144).

The spelling of 221011220022 in words is "two hundred twenty-one billion, eleven million, two hundred twenty thousand, twenty-two".