21120023210103 has 6 divisors (see below), whose sum is σ = 30506700192384. Its totient is φ = 14080015473396.

The previous prime is 21120023210101. The next prime is 21120023210113. The reversal of 21120023210103 is 30101232002112.

21120023210103 is a `hidden beast` number, since 211 + 200 + 232 + 10 + 10 + 3 = 666.

It is not a de Polignac number, because 21120023210103 - 2¹ = 21120023210101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120023210101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173334622775 + ... + 1173334622792.

It is an arithmetic number, because the mean of its divisors is an integer number (5084450032064).

Almost surely, 2^{21120023210103} is an apocalyptic number.

21120023210103 is a deficient number, since it is larger than the sum of its proper divisors (9386676982281).

21120023210103 is a wasteful number, since it uses less digits than its factorization.

21120023210103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346669245573 (or 2346669245570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21120023210103 its reverse (30101232002112), we get a palindrome (51221255212215).

The spelling of 21120023210103 in words is "twenty-one trillion, one hundred twenty billion, twenty-three million, two hundred ten thousand, one hundred three".