10121423403 has 32 divisors (see below), whose sum is σ = 16615707136. Its totient is φ = 5336782848.

The previous prime is 10121423359. The next prime is 10121423437. The reversal of 10121423403 is 30432412101.

It is not a de Polignac number, because 10121423403 - 2⁶ = 10121423339 is a prime.

It is a super-2 number, since 2×10121423403² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 10121423403.

It is not an unprimeable number, because it can be changed into a prime (10121423453) 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, 989451 + ... + 999627.

It is an arithmetic number, because the mean of its divisors is an integer number (519240848).

Almost surely, 2^10121423403 is an apocalyptic number.

10121423403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10121423403 is a deficient number, since it is larger than the sum of its proper divisors (6494283733).

10121423403 is a wasteful number, since it uses less digits than its factorization.

10121423403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10121423403 its reverse (30432412101), we get a palindrome (40553835504).

The spelling of 10121423403 in words is "ten billion, one hundred twenty-one million, four hundred twenty-three thousand, four hundred three".