221011121012110 has 128 divisors (see below), whose sum is σ = 467791554585600. Its totient is φ = 74118501273600.

The previous prime is 221011121012089. The next prime is 221011121012177. The reversal of 221011121012110 is 11210121110122.

221011121012110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221011121012110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10138578991 + ... + 10138600789.

It is an arithmetic number, because the mean of its divisors is an integer number (3654621520200).

Almost surely, 2^{221011121012110} is an apocalyptic number.

221011121012110 is an abundant number, since it is smaller than the sum of its proper divisors (246780433573490).

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

221011121012110 is a wasteful number, since it uses less digits than its factorization.

221011121012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27914.

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

Adding to 221011121012110 its reverse (11210121110122), we get a palindrome (232221242122232).

The spelling of 221011121012110 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-one million, twelve thousand, one hundred ten".