103121332030021 has 4 divisors (see below), whose sum is σ = 103238117231392. Its totient is φ = 103004546828652.

The previous prime is 103121332030009. The next prime is 103121332030027. The reversal of 103121332030021 is 120030233121301.

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 103121332030021 - 2⁷ = 103121332029893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103121332029974 and 103121332030001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121332030027) 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, 58392599361 + ... + 58392601126.

It is an arithmetic number, because the mean of its divisors is an integer number (25809529307848).

Almost surely, 2^{103121332030021} is an apocalyptic number.

It is an amenable number.

103121332030021 is a deficient number, since it is larger than the sum of its proper divisors (116785201371).

103121332030021 is an equidigital number, since it uses as much as digits as its factorization.

103121332030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116785201370.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 103121332030021 its reverse (120030233121301), we get a palindrome (223151565151322).

The spelling of 103121332030021 in words is "one hundred three trillion, one hundred twenty-one billion, three hundred thirty-two million, thirty thousand, twenty-one".