21320110512001 has 8 divisors (see below), whose sum is σ = 25648253247680. Its totient is φ = 17312570941968.

The previous prime is 21320110511983. The next prime is 21320110512013. The reversal of 21320110512001 is 10021501102312.

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 21320110512001 - 2¹⁹ = 21320109987713 is a prime.

It is a super-2 number, since 2×21320110512001² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 21320110512001.

It is not an unprimeable number, because it can be changed into a prime (21320110512061) 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, 80150791266 + ... + 80150791531.

It is an arithmetic number, because the mean of its divisors is an integer number (3206031655960).

Almost surely, 2^{21320110512001} is an apocalyptic number.

It is an amenable number.

21320110512001 is a deficient number, since it is larger than the sum of its proper divisors (4328142735679).

21320110512001 is a wasteful number, since it uses less digits than its factorization.

21320110512001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160301582823.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 21320110512001 its reverse (10021501102312), we get a palindrome (31341611614313).

The spelling of 21320110512001 in words is "twenty-one trillion, three hundred twenty billion, one hundred ten million, five hundred twelve thousand, one".