221101202212 has 24 divisors (see below), whose sum is σ = 424289369952. Its totient is φ = 99979814400.

The previous prime is 221101202183. The next prime is 221101202261. The reversal of 221101202212 is 212202101122.

It is a happy number.

221101202212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13009714 + ... + 13026697.

It is an arithmetic number, because the mean of its divisors is an integer number (17678723748).

Almost surely, 2^221101202212 is an apocalyptic number.

221101202212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221101202212 is a deficient number, since it is larger than the sum of its proper divisors (203188167740).

221101202212 is a wasteful number, since it uses less digits than its factorization.

221101202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26036619 (or 26036617 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221101202212 its reverse (212202101122), we get a palindrome (433303303334).

The spelling of 221101202212 in words is "two hundred twenty-one billion, one hundred one million, two hundred two thousand, two hundred twelve".