21102301042 has 16 divisors (see below), whose sum is σ = 33528494592. Its totient is φ = 9926620480.

The previous prime is 21102300953. The next prime is 21102301043. The reversal of 21102301042 is 24010320112.

It is not an unprimeable number, because it can be changed into a prime (21102301043) 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, 31678 + ... + 207865.

It is an arithmetic number, because the mean of its divisors is an integer number (2095530912).

Almost surely, 2^21102301042 is an apocalyptic number.

21102301042 is a deficient number, since it is larger than the sum of its proper divisors (12426193550).

21102301042 is a wasteful number, since it uses less digits than its factorization.

21102301042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242153.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21102301042 its reverse (24010320112), we get a palindrome (45112621154).

The spelling of 21102301042 in words is "twenty-one billion, one hundred two million, three hundred one thousand, forty-two".