21320101331201 has 6 divisors (see below), whose sum is σ = 22501270380402. Its totient is φ = 20197990734480.

The previous prime is 21320101331197. The next prime is 21320101331237. The reversal of 21320101331201 is 10213310102312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19813404000625 + 1506697330576 = 4451225^2 + 1227476^2 .

It is not a de Polignac number, because 21320101331201 - 2² = 21320101331197 is a prime.

It is a super-2 number, since 2×21320101331201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320101331401) 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 5 ways as a sum of consecutive naturals, for example, 29529225860 + ... + 29529226581.

It is an arithmetic number, because the mean of its divisors is an integer number (3750211730067).

Almost surely, 2^{21320101331201} is an apocalyptic number.

It is an amenable number.

21320101331201 is a deficient number, since it is larger than the sum of its proper divisors (1181169049201).

21320101331201 is an equidigital number, since it uses as much as digits as its factorization.

21320101331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59058452479 (or 59058452460 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21320101331201 its reverse (10213310102312), we get a palindrome (31533411433513).

The spelling of 21320101331201 in words is "twenty-one trillion, three hundred twenty billion, one hundred one million, three hundred thirty-one thousand, two hundred one".