21020422010105 has 8 divisors (see below), whose sum is σ = 28828007328192. Its totient is φ = 14414003664048.

The previous prime is 21020422010011. The next prime is 21020422010179. The reversal of 21020422010105 is 50101022402012.

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 21020422010105 - 2¹⁶ = 21020421944569 is a prime.

It is a super-2 number, since 2×21020422010105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300291742967 + ... + 300291743036.

It is an arithmetic number, because the mean of its divisors is an integer number (3603500916024).

Almost surely, 2^{21020422010105} is an apocalyptic number.

It is an amenable number.

21020422010105 is a deficient number, since it is larger than the sum of its proper divisors (7807585318087).

21020422010105 is an equidigital number, since it uses as much as digits as its factorization.

21020422010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600583486015.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 21020422010105 its reverse (50101022402012), we get a palindrome (71121444412117).

The spelling of 21020422010105 in words is "twenty-one trillion, twenty billion, four hundred twenty-two million, ten thousand, one hundred five".