221202220222011 has 24 divisors (see below), whose sum is σ = 343776711432000. Its totient is φ = 126147959500752.

The previous prime is 221202220222007. The next prime is 221202220222063. The reversal of 221202220222011 is 110222022202122.

221202220222011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221202220222011 - 2² = 221202220222007 is a prime.

It is a super-2 number, since 2×221202220222011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (221202220221011) 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, 1507719241 + ... + 1507865946.

It is an arithmetic number, because the mean of its divisors is an integer number (14324029643000).

Almost surely, 2^{221202220222011} is an apocalyptic number.

221202220222011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221202220222011 is a deficient number, since it is larger than the sum of its proper divisors (122574491209989).

221202220222011 is a wasteful number, since it uses less digits than its factorization.

221202220222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015585703 (or 3015585696 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221202220222011 its reverse (110222022202122), we get a palindrome (331424242424133).

The spelling of 221202220222011 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty million, two hundred twenty-two thousand, eleven".