21112021022 has 32 divisors (see below), whose sum is σ = 32792739840. Its totient is φ = 10187190720.

The previous prime is 21112020971. The next prime is 21112021033. The reversal of 21112021022 is 22012021112.

It is a junction number, because it is equal to n+sod(n) for n = 21112020988 and 21112021006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3735803 + ... + 3741449.

It is an arithmetic number, because the mean of its divisors is an integer number (1024773120).

Almost surely, 2^21112021022 is an apocalyptic number.

21112021022 is a deficient number, since it is larger than the sum of its proper divisors (11680718818).

21112021022 is a wasteful number, since it uses less digits than its factorization.

21112021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21112021022 its reverse (22012021112), we get a palindrome (43124042134).

The spelling of 21112021022 in words is "twenty-one billion, one hundred twelve million, twenty-one thousand, twenty-two".