10121123320 has 128 divisors (see below), whose sum is σ = 29626352640. Its totient is φ = 3017456640.

The previous prime is 10121123267. The next prime is 10121123321. The reversal of 10121123320 is 2332112101.

It is a junction number, because it is equal to n+sod(n) for n = 10121123294 and 10121123303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121123321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597 + ... + 142276.

It is an arithmetic number, because the mean of its divisors is an integer number (231455880).

Almost surely, 2^10121123320 is an apocalyptic number.

10121123320 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 10121123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14813176320).

10121123320 is an abundant number, since it is smaller than the sum of its proper divisors (19505229320).

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

10121123320 is a wasteful number, since it uses less digits than its factorization.

10121123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142925 (or 142921 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10121123320 its reverse (2332112101), we get a palindrome (12453235421).

The spelling of 10121123320 in words is "ten billion, one hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty".