10121030040 has 128 divisors (see below), whose sum is σ = 34192005120. Its totient is φ = 2374425600.

The previous prime is 10121030027. The next prime is 10121030041. The reversal of 10121030040 is 4003012101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10121029998 and 10121030025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121030041) 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, 82749 + ... + 164588.

It is an arithmetic number, because the mean of its divisors is an integer number (267125040).

Almost surely, 2^10121030040 is an apocalyptic number.

10121030040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121030040 is an abundant number, since it is smaller than the sum of its proper divisors (24070975080).

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

10121030040 is a wasteful number, since it uses less digits than its factorization.

10121030040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247393 (or 247389 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 10121030040 its reverse (4003012101), we get a palindrome (14124042141).

The spelling of 10121030040 in words is "ten billion, one hundred twenty-one million, thirty thousand, forty".