10121112420 has 96 divisors (see below), whose sum is σ = 28560833280. Its totient is φ = 2677916160.

The previous prime is 10121112389. The next prime is 10121112427. The reversal of 10121112420 is 2421112101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10121112420.

It is not an unprimeable number, because it can be changed into a prime (10121112427) 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, 9538690 + ... + 9539750.

It is an arithmetic number, because the mean of its divisors is an integer number (297508680).

Almost surely, 2^10121112420 is an apocalyptic number.

10121112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121112420 is an abundant number, since it is smaller than the sum of its proper divisors (18439720860).

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

10121112420 is a wasteful number, since it uses less digits than its factorization.

10121112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10121112420 its reverse (2421112101), we get a palindrome (12542224521).

The spelling of 10121112420 in words is "ten billion, one hundred twenty-one million, one hundred twelve thousand, four hundred twenty".