21112020222110 has 24 divisors (see below), whose sum is σ = 38136393739800. Its totient is φ = 8414967458352.

The previous prime is 21112020222071. The next prime is 21112020222113. The reversal of 21112020222110 is 1122202021112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112020222113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12379460 + ... + 13981239.

It is an arithmetic number, because the mean of its divisors is an integer number (1589016405825).

Almost surely, 2^{21112020222110} is an apocalyptic number.

21112020222110 is a deficient number, since it is larger than the sum of its proper divisors (17024373517690).

21112020222110 is an equidigital number, since it uses as much as digits as its factorization.

21112020222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26361272 (or 26360989 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21112020222110 its reverse (1122202021112), we get a palindrome (22234222243222).

The spelling of 21112020222110 in words is "twenty-one trillion, one hundred twelve billion, twenty million, two hundred twenty-two thousand, one hundred ten".