10111242421 has 4 divisors (see below), whose sum is σ = 11555705632. Its totient is φ = 8666779212.

The previous prime is 10111242419. The next prime is 10111242431. The reversal of 10111242421 is 12424211101.

It is a happy number.

10111242421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12424211101 = 307 ⋅40469743.

It is not a de Polignac number, because 10111242421 - 2¹ = 10111242419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111242431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722231595 + ... + 722231608.

It is an arithmetic number, because the mean of its divisors is an integer number (2888926408).

Almost surely, 2^10111242421 is an apocalyptic number.

It is an amenable number.

10111242421 is a deficient number, since it is larger than the sum of its proper divisors (1444463211).

10111242421 is an equidigital number, since it uses as much as digits as its factorization.

10111242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444463210.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10111242421 its reverse (12424211101), we get a palindrome (22535453522).

The spelling of 10111242421 in words is "ten billion, one hundred eleven million, two hundred forty-two thousand, four hundred twenty-one".