20251103403101 has 4 divisors (see below), whose sum is σ = 21442344779772. Its totient is φ = 19059862026432.

The previous prime is 20251103403073. The next prime is 20251103403103. The reversal of 20251103403101 is 10130430115202.

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 6533161560025 + 13717941843076 = 2556005^2 + 3703774^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20251103403101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251103403103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595620688310 + ... + 595620688343.

It is an arithmetic number, because the mean of its divisors is an integer number (5360586194943).

Almost surely, 2^{20251103403101} is an apocalyptic number.

It is an amenable number.

20251103403101 is a deficient number, since it is larger than the sum of its proper divisors (1191241376671).

20251103403101 is a wasteful number, since it uses less digits than its factorization.

20251103403101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191241376670.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 20251103403101 its reverse (10130430115202), we get a palindrome (30381533518303).

The spelling of 20251103403101 in words is "twenty trillion, two hundred fifty-one billion, one hundred three million, four hundred three thousand, one hundred one".