120001012110 has 128 divisors (see below), whose sum is σ = 369268623360. Its totient is φ = 27162459648.

The previous prime is 120001012091. The next prime is 120001012111. The reversal of 120001012110 is 11210100021.

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 = 120001012092 and 120001012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113547 + ... + 502886.

It is an arithmetic number, because the mean of its divisors is an integer number (2884911120).

Almost surely, 2^120001012110 is an apocalyptic number.

120001012110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120001012110 is an abundant number, since it is smaller than the sum of its proper divisors (249267611250).

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

120001012110 is a wasteful number, since it uses less digits than its factorization.

120001012110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616559 (or 616553 counting only the distinct ones).

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

Adding to 120001012110 its reverse (11210100021), we get a palindrome (131211112131).

The spelling of 120001012110 in words is "one hundred twenty billion, one million, twelve thousand, one hundred ten".