109935824421 has 4 divisors (see below), whose sum is σ = 146581099232. Its totient is φ = 73290549612.

The previous prime is 109935824407. The next prime is 109935824459. The reversal of 109935824421 is 124428539901.

It is a happy number.

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: 124428539901 = 3 ⋅41476179967.

It is not a de Polignac number, because 109935824421 - 2⁷ = 109935824293 is a prime.

It is a super-2 number, since 2×109935824421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109935824021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18322637401 + ... + 18322637406.

It is an arithmetic number, because the mean of its divisors is an integer number (36645274808).

Almost surely, 2^109935824421 is an apocalyptic number.

It is an amenable number.

109935824421 is a deficient number, since it is larger than the sum of its proper divisors (36645274811).

109935824421 is an equidigital number, since it uses as much as digits as its factorization.

109935824421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36645274810.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 109935824421 in words is "one hundred nine billion, nine hundred thirty-five million, eight hundred twenty-four thousand, four hundred twenty-one".