103013210021 has 4 divisors (see below), whose sum is σ = 105408866112. Its totient is φ = 100617553932.

The previous prime is 103013210011. The next prime is 103013210029. The reversal of 103013210021 is 120012310301.

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 103013210021 - 2²⁶ = 102946101157 is a prime.

It is a super-2 number, since 2×103013210021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103013209978 and 103013210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103013210029) 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, 1197827981 + ... + 1197828066.

It is an arithmetic number, because the mean of its divisors is an integer number (26352216528).

Almost surely, 2^103013210021 is an apocalyptic number.

It is an amenable number.

103013210021 is a deficient number, since it is larger than the sum of its proper divisors (2395656091).

103013210021 is an equidigital number, since it uses as much as digits as its factorization.

103013210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395656090.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 103013210021 its reverse (120012310301), we get a palindrome (223025520322).

The spelling of 103013210021 in words is "one hundred three billion, thirteen million, two hundred ten thousand, twenty-one".