221211100220110 has 288 divisors, whose sum is σ = 548925496310016. Its totient is φ = 63571211827200.

The previous prime is 221211100220101. The next prime is 221211100220129. The reversal of 221211100220110 is 11022001112122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 665008230 + ... + 665340790.

It is an arithmetic number, because the mean of its divisors is an integer number (1905991306632).

Almost surely, 2^{221211100220110} is an apocalyptic number.

221211100220110 is an abundant number, since it is smaller than the sum of its proper divisors (327714396089906).

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

221211100220110 is a wasteful number, since it uses less digits than its factorization.

221211100220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333480 (or 333462 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221211100220110 its reverse (11022001112122), we get a palindrome (232233101332232).

The spelling of 221211100220110 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred million, two hundred twenty thousand, one hundred ten".