121110211220110 has 16 divisors (see below), whose sum is σ = 249141005938656. Its totient is φ = 41523500989728.

The previous prime is 121110211220081. The next prime is 121110211220137. The reversal of 121110211220110 is 11022112011121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865072937217 + ... + 865072937356.

It is an arithmetic number, because the mean of its divisors is an integer number (15571312871166).

Almost surely, 2^{121110211220110} is an apocalyptic number.

121110211220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121110211220110 is an abundant number, since it is smaller than the sum of its proper divisors (128030794718546).

121110211220110 is a wasteful number, since it uses less digits than its factorization.

121110211220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730145874587.

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

Adding to 121110211220110 its reverse (11022112011121), we get a palindrome (132132323231231).

The spelling of 121110211220110 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred eleven million, two hundred twenty thousand, one hundred ten".