21232012102 has 8 divisors (see below), whose sum is σ = 36397735056. Its totient is φ = 9099433752.

The previous prime is 21232012091. The next prime is 21232012157. The reversal of 21232012102 is 20121023212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758286133 + ... + 758286160.

It is an arithmetic number, because the mean of its divisors is an integer number (4549716882).

Almost surely, 2^21232012102 is an apocalyptic number.

21232012102 is a deficient number, since it is larger than the sum of its proper divisors (15165722954).

21232012102 is a wasteful number, since it uses less digits than its factorization.

21232012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516572302.

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

Adding to 21232012102 its reverse (20121023212), we get a palindrome (41353035314).

It can be divided in two parts, 212320 and 12102, that added together give a palindrome (224422).

The spelling of 21232012102 in words is "twenty-one billion, two hundred thirty-two million, twelve thousand, one hundred two".