120121110 has 32 divisors (see below), whose sum is σ = 320323680. Its totient is φ = 32032224.

The previous prime is 120121093. The next prime is 120121121. The reversal of 120121110 is 11121021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120121092 and 120121101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222177 + ... + 222716.

It is an arithmetic number, because the mean of its divisors is an integer number (10010115).

Almost surely, 2^120121110 is an apocalyptic number.

120121110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120121110 is an abundant number, since it is smaller than the sum of its proper divisors (200202570).

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

120121110 is a wasteful number, since it uses less digits than its factorization.

120121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444909 (or 444903 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 120121110 is about 10959.9776459626. The cubic root of 120121110 is about 493.4082940432.

Adding to 120121110 its reverse (11121021), we get a palindrome (131242131).

The spelling of 120121110 in words is "one hundred twenty million, one hundred twenty-one thousand, one hundred ten".