100111203231421 has 8 divisors (see below), whose sum is σ = 102554374548024. Its totient is φ = 97668100231680.

The previous prime is 100111203231419. The next prime is 100111203231439. The reversal of 100111203231421 is 124132302111001.

It can be written as a sum of positive squares in 4 ways, for example, as 61497056196 + 100049706175225 = 247986^2 + 10002485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100111203231421 - 2¹ = 100111203231419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111203231392 and 100111203231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111203231451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14106426 + ... + 19980331.

It is an arithmetic number, because the mean of its divisors is an integer number (12819296818503).

Almost surely, 2^{100111203231421} is an apocalyptic number.

It is an amenable number.

100111203231421 is a deficient number, since it is larger than the sum of its proper divisors (2443171316603).

100111203231421 is an equidigital number, since it uses as much as digits as its factorization.

100111203231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34158431.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 100111203231421 its reverse (124132302111001), we get a palindrome (224243505342422).

The spelling of 100111203231421 in words is "one hundred trillion, one hundred eleven billion, two hundred three million, two hundred thirty-one thousand, four hundred twenty-one".