221121122110 has 192 divisors, whose sum is σ = 491960770560. Its totient is φ = 70073118720.

The previous prime is 221121122099. The next prime is 221121122129. The reversal of 221121122110 is 11221121122.

221121122110 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 343889449 + ... + 343890091.

It is an arithmetic number, because the mean of its divisors is an integer number (2562295680).

Almost surely, 2^221121122110 is an apocalyptic number.

221121122110 is an abundant number, since it is smaller than the sum of its proper divisors (270839648450).

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

221121122110 is a wasteful number, since it uses less digits than its factorization.

221121122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 954 counting only the distinct ones).

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

Adding to 221121122110 its reverse (11221121122), we get a palindrome (232342243232).

The spelling of 221121122110 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred ten".