103204421251 has 4 divisors (see below), whose sum is σ = 103251058992. Its totient is φ = 103157783512.

The previous prime is 103204421239. The next prime is 103204421347. The reversal of 103204421251 is 152124402301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103204421251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103204421231) 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, 23315551 + ... + 23319976.

It is an arithmetic number, because the mean of its divisors is an integer number (25812764748).

Almost surely, 2^103204421251 is an apocalyptic number.

103204421251 is a deficient number, since it is larger than the sum of its proper divisors (46637741).

103204421251 is an equidigital number, since it uses as much as digits as its factorization.

103204421251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46637740.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 103204421251 its reverse (152124402301), we get a palindrome (255328823552).

The spelling of 103204421251 in words is "one hundred three billion, two hundred four million, four hundred twenty-one thousand, two hundred fifty-one".