121021101110 has 144 divisors (see below), whose sum is σ = 275103021600. Its totient is φ = 38202458112.

The previous prime is 121021101067. The next prime is 121021101133. The reversal of 121021101110 is 11101120121.

121021101110 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121021101110² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021101091 and 121021101100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36351926 + ... + 36355254.

It is an arithmetic number, because the mean of its divisors is an integer number (1910437650).

Almost surely, 2^121021101110 is an apocalyptic number.

121021101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021101110 is an abundant number, since it is smaller than the sum of its proper divisors (154081920490).

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

121021101110 is a wasteful number, since it uses less digits than its factorization.

121021101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121021101110 its reverse (11101120121), we get a palindrome (132122221231).

The spelling of 121021101110 in words is "one hundred twenty-one billion, twenty-one million, one hundred one thousand, one hundred ten".