103121020100321 has 16 divisors (see below), whose sum is σ = 106359353278464. Its totient is φ = 99921015334224.

The previous prime is 103121020100237. The next prime is 103121020100333. The reversal of 103121020100321 is 123001020121301.

It is a cyclic number.

It is not a de Polignac number, because 103121020100321 - 2²² = 103121015906017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103121020100321.

It is not an unprimeable number, because it can be changed into a prime (103121025100321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61997090 + ... + 63638676.

It is an arithmetic number, because the mean of its divisors is an integer number (6647459579904).

Almost surely, 2^{103121020100321} is an apocalyptic number.

It is an amenable number.

103121020100321 is a deficient number, since it is larger than the sum of its proper divisors (3238333178143).

103121020100321 is a wasteful number, since it uses less digits than its factorization.

103121020100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653260.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103121020100321 its reverse (123001020121301), we get a palindrome (226122040221622).

The spelling of 103121020100321 in words is "one hundred three trillion, one hundred twenty-one billion, twenty million, one hundred thousand, three hundred twenty-one".