10111432021 has 4 divisors (see below), whose sum is σ = 10134784492. Its totient is φ = 10088079552.

The previous prime is 10111432007. The next prime is 10111432031. The reversal of 10111432021 is 12023411101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2956640625 + 7154791396 = 54375^2 + 84586^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111432021 - 2¹¹ = 10111429973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111431986 and 10111432004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111432031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11675586 + ... + 11676451.

It is an arithmetic number, because the mean of its divisors is an integer number (2533696123).

Almost surely, 2^10111432021 is an apocalyptic number.

It is an amenable number.

10111432021 is a deficient number, since it is larger than the sum of its proper divisors (23352471).

10111432021 is an equidigital number, since it uses as much as digits as its factorization.

10111432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23352470.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10111432021 its reverse (12023411101), we get a palindrome (22134843122).

The spelling of 10111432021 in words is "ten billion, one hundred eleven million, four hundred thirty-two thousand, twenty-one".