21230102231 has 8 divisors (see below), whose sum is σ = 24208080624. Its totient is φ = 18444251520.

The previous prime is 21230102203. The next prime is 21230102237. The reversal of 21230102231 is 13220103212.

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

It is a cyclic number.

It is not a de Polignac number, because 21230102231 - 2⁶ = 21230102167 is a prime.

It is a super-2 number, since 2×21230102231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230102237) 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, 48031685 + ... + 48032126.

It is an arithmetic number, because the mean of its divisors is an integer number (3026010078).

Almost surely, 2^21230102231 is an apocalyptic number.

21230102231 is a deficient number, since it is larger than the sum of its proper divisors (2977978393).

21230102231 is a wasteful number, since it uses less digits than its factorization.

21230102231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96063841.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21230102231 its reverse (13220103212), we get a palindrome (34450205443).

The spelling of 21230102231 in words is "twenty-one billion, two hundred thirty million, one hundred two thousand, two hundred thirty-one".