120021110010 has 192 divisors, whose sum is σ = 326955073536. Its totient is φ = 30510691200.

The previous prime is 120021109993. The next prime is 120021110023. The reversal of 120021110010 is 10011120021.

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 = 120021109974 and 120021110001.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 121110615 + ... + 121111605.

It is an arithmetic number, because the mean of its divisors is an integer number (1702891008).

Almost surely, 2^120021110010 is an apocalyptic number.

120021110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120021110010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163477536768).

120021110010 is an abundant number, since it is smaller than the sum of its proper divisors (206933963526).

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

120021110010 is a wasteful number, since it uses less digits than its factorization.

120021110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1638 counting only the distinct ones).

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

Adding to 120021110010 its reverse (10011120021), we get a palindrome (130032230031).

The spelling of 120021110010 in words is "one hundred twenty billion, twenty-one million, one hundred ten thousand, ten".