10020121120 has 96 divisors (see below), whose sum is σ = 24947274240. Its totient is φ = 3795686400.

The previous prime is 10020121081. The next prime is 10020121121. The reversal of 10020121120 is 2112102001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10020121097 and 10020121106.

It is not an unprimeable number, because it can be changed into a prime (10020121121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358201 + ... + 385159.

It is an arithmetic number, because the mean of its divisors is an integer number (259867440).

Almost surely, 2^10020121120 is an apocalyptic number.

10020121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10020121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12473637120).

10020121120 is an abundant number, since it is smaller than the sum of its proper divisors (14927153120).

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

10020121120 is a wasteful number, since it uses less digits than its factorization.

10020121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27098 (or 27090 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10020121120 its reverse (2112102001), we get a palindrome (12132223121).

The spelling of 10020121120 in words is "ten billion, twenty million, one hundred twenty-one thousand, one hundred twenty".