21035200232231 has 8 divisors (see below), whose sum is σ = 22991034789504. Its totient is φ = 19159195656960.

The previous prime is 21035200232191. The next prime is 21035200232239. The reversal of 21035200232231 is 13223200253012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21035200232231 is a prime.

It is a super-2 number, since 2×21035200232231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21035200232231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035200232239) 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, 19957494950 + ... + 19957496003.

It is an arithmetic number, because the mean of its divisors is an integer number (2873879348688).

Almost surely, 2^{21035200232231} is an apocalyptic number.

21035200232231 is a deficient number, since it is larger than the sum of its proper divisors (1955834557273).

21035200232231 is a wasteful number, since it uses less digits than its factorization.

21035200232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39914991001.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 21035200232231 its reverse (13223200253012), we get a palindrome (34258400485243).

The spelling of 21035200232231 in words is "twenty-one trillion, thirty-five billion, two hundred million, two hundred thirty-two thousand, two hundred thirty-one".