2103112123221 has 8 divisors (see below), whose sum is σ = 2804213373984. Its totient is φ = 1402042810640.

The previous prime is 2103112123159. The next prime is 2103112123237. The reversal of 2103112123221 is 1223212113012.

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 2103112123221 - 2³⁷ = 1965673169749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103112123921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7830471 + ... + 8094596.

It is an arithmetic number, because the mean of its divisors is an integer number (350526671748).

Almost surely, 2^{2103112123221} is an apocalyptic number.

It is an amenable number.

2103112123221 is a deficient number, since it is larger than the sum of its proper divisors (701101250763).

2103112123221 is a wasteful number, since it uses less digits than its factorization.

2103112123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15969091.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2103112123221 its reverse (1223212113012), we get a palindrome (3326324236233).

The spelling of 2103112123221 in words is "two trillion, one hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".