21103111022131 has 8 divisors (see below), whose sum is σ = 21552180713280. Its totient is φ = 20654044136448.

The previous prime is 21103111022099. The next prime is 21103111022141. The reversal of 21103111022131 is 13122011130112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21103111022131 - 2⁵ = 21103111022099 is a prime.

It is a super-2 number, since 2×21103111022131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21103111022099 and 21103111022108.

It is not an unprimeable number, because it can be changed into a prime (21103111022141) 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, 22776435 + ... + 23684851.

It is an arithmetic number, because the mean of its divisors is an integer number (2694022589160).

Almost surely, 2^{21103111022131} is an apocalyptic number.

21103111022131 is a deficient number, since it is larger than the sum of its proper divisors (449069691149).

21103111022131 is an equidigital number, since it uses as much as digits as its factorization.

21103111022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402733.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21103111022131 its reverse (13122011130112), we get a palindrome (34225122152243).

The spelling of 21103111022131 in words is "twenty-one trillion, one hundred three billion, one hundred eleven million, twenty-two thousand, one hundred thirty-one".