103613256420221 has 4 divisors (see below), whose sum is σ = 105817793790912. Its totient is φ = 101408719049532.

The previous prime is 103613256420217. The next prime is 103613256420277. The reversal of 103613256420221 is 122024652316301.

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.

It is a cyclic number.

It is not a de Polignac number, because 103613256420221 - 2² = 103613256420217 is a prime.

It is a super-3 number, since 3×103613256420221³ (a number of 43 digits) contains 333 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 (103613256410221) 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, 1102268685275 + ... + 1102268685368.

It is an arithmetic number, because the mean of its divisors is an integer number (26454448447728).

Almost surely, 2^{103613256420221} is an apocalyptic number.

It is an amenable number.

103613256420221 is a deficient number, since it is larger than the sum of its proper divisors (2204537370691).

103613256420221 is an equidigital number, since it uses as much as digits as its factorization.

103613256420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204537370690.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 103613256420221 in words is "one hundred three trillion, six hundred thirteen billion, two hundred fifty-six million, four hundred twenty thousand, two hundred twenty-one".