103221130021 has 8 divisors (see below), whose sum is σ = 103425070424. Its totient is φ = 103017277440.

The previous prime is 103221130003. The next prime is 103221130031. The reversal of 103221130021 is 120031122301.

It can be written as a sum of positive squares in 4 ways, for example, as 58440645025 + 44780484996 = 241745^2 + 211614^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103221130021 - 2²¹ = 103219032869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103221129977 and 103221130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221130031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2646961 + ... + 2685673.

It is an arithmetic number, because the mean of its divisors is an integer number (12928133803).

Almost surely, 2^103221130021 is an apocalyptic number.

It is an amenable number.

103221130021 is a deficient number, since it is larger than the sum of its proper divisors (203940403).

103221130021 is an equidigital number, since it uses as much as digits as its factorization.

103221130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43911.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103221130021 its reverse (120031122301), we get a palindrome (223252252322).

The spelling of 103221130021 in words is "one hundred three billion, two hundred twenty-one million, one hundred thirty thousand, twenty-one".