21120231002 has 16 divisors (see below), whose sum is σ = 34119882720. Its totient is φ = 9747059952.

The previous prime is 21120231001. The next prime is 21120231019. The reversal of 21120231002 is 20013202112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21120231001) 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, 476393 + ... + 518835.

It is an arithmetic number, because the mean of its divisors is an integer number (2132492670).

Almost surely, 2^21120231002 is an apocalyptic number.

21120231002 is a deficient number, since it is larger than the sum of its proper divisors (12999651718).

21120231002 is a wasteful number, since it uses less digits than its factorization.

21120231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61597.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21120231002 its reverse (20013202112), we get a palindrome (41133433114).

The spelling of 21120231002 in words is "twenty-one billion, one hundred twenty million, two hundred thirty-one thousand, two".