21103101022331 has 4 divisors (see below), whose sum is σ = 21593870813592. Its totient is φ = 20612331231072.

The previous prime is 21103101022327. The next prime is 21103101022357. The reversal of 21103101022331 is 13322010130112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21103101022331 - 2² = 21103101022327 is a prime.

It is a super-2 number, since 2×21103101022331² (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 (21103101022391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245384895566 + ... + 245384895651.

It is an arithmetic number, because the mean of its divisors is an integer number (5398467703398).

Almost surely, 2^{21103101022331} is an apocalyptic number.

21103101022331 is a deficient number, since it is larger than the sum of its proper divisors (490769791261).

21103101022331 is an equidigital number, since it uses as much as digits as its factorization.

21103101022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490769791260.

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

Adding to 21103101022331 its reverse (13322010130112), we get a palindrome (34425111152443).

The spelling of 21103101022331 in words is "twenty-one trillion, one hundred three billion, one hundred one million, twenty-two thousand, three hundred thirty-one".