21020132012201 has 4 divisors (see below), whose sum is σ = 24023008013952. Its totient is φ = 18017256010452.

The previous prime is 21020132012171. The next prime is 21020132012213. The reversal of 21020132012201 is 10221023102012.

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.

It is a cyclic number.

It is not a de Polignac number, because 21020132012201 - 2⁶ = 21020132012137 is a prime.

It is a super-2 number, since 2×21020132012201² (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 21020132012201.

It is not an unprimeable number, because it can be changed into a prime (21020132012251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501438000865 + ... + 1501438000878.

It is an arithmetic number, because the mean of its divisors is an integer number (6005752003488).

Almost surely, 2^{21020132012201} is an apocalyptic number.

It is an amenable number.

21020132012201 is a deficient number, since it is larger than the sum of its proper divisors (3002876001751).

21020132012201 is an equidigital number, since it uses as much as digits as its factorization.

21020132012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002876001750.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21020132012201 its reverse (10221023102012), we get a palindrome (31241155114213).

The spelling of 21020132012201 in words is "twenty-one trillion, twenty billion, one hundred thirty-two million, twelve thousand, two hundred one".