2121023103 has 16 divisors (see below), whose sum is σ = 2881837056. Its totient is φ = 1387316160.

The previous prime is 2121023053. The next prime is 2121023119. The reversal of 2121023103 is 3013201212.

It is not a de Polignac number, because 2121023103 - 2¹² = 2121019007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121023153) 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, 16476 + ... + 67182.

It is an arithmetic number, because the mean of its divisors is an integer number (180114816).

Almost surely, 2^2121023103 is an apocalyptic number.

2121023103 is a deficient number, since it is larger than the sum of its proper divisors (760813953).

2121023103 is a wasteful number, since it uses less digits than its factorization.

2121023103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50974.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2121023103 is about 46054.5665813934. The cubic root of 2121023103 is about 1284.8382770730.

Adding to 2121023103 its reverse (3013201212), we get a palindrome (5134224315).

The spelling of 2121023103 in words is "two billion, one hundred twenty-one million, twenty-three thousand, one hundred three".