21230011332001 has 4 divisors (see below), whose sum is σ = 21230022269632. Its totient is φ = 21230000394372.

The previous prime is 21230011331959. The next prime is 21230011332107. The reversal of 21230011332001 is 10023311003212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21230011332001 - 2¹¹ = 21230011329953 is a prime.

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 21230011332001.

It is not an unprimeable number, because it can be changed into a prime (21230011332301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684341 + ... + 6730306.

It is an arithmetic number, because the mean of its divisors is an integer number (5307505567408).

Almost surely, 2^{21230011332001} is an apocalyptic number.

It is an amenable number.

21230011332001 is a deficient number, since it is larger than the sum of its proper divisors (10937631).

21230011332001 is an equidigital number, since it uses as much as digits as its factorization.

21230011332001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10937630.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21230011332001 its reverse (10023311003212), we get a palindrome (31253322335213).

The spelling of 21230011332001 in words is "twenty-one trillion, two hundred thirty billion, eleven million, three hundred thirty-two thousand, one".