21230131102 has 8 divisors (see below), whose sum is σ = 32021137512. Its totient is φ = 10556418600.

The previous prime is 21230131093. The next prime is 21230131121. The reversal of 21230131102 is 20113103212.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29323024 + ... + 29323747.

It is an arithmetic number, because the mean of its divisors is an integer number (4002642189).

Almost surely, 2^21230131102 is an apocalyptic number.

21230131102 is a deficient number, since it is larger than the sum of its proper divisors (10791006410).

21230131102 is a wasteful number, since it uses less digits than its factorization.

21230131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58646954.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21230131102 its reverse (20113103212), we get a palindrome (41343234314).

The spelling of 21230131102 in words is "twenty-one billion, two hundred thirty million, one hundred thirty-one thousand, one hundred two".