21011112022 has 16 divisors (see below), whose sum is σ = 33373274832. Its totient is φ = 9886786560.

The previous prime is 21011112011. The next prime is 21011112047. The reversal of 21011112022 is 22021111012.

It is a junction number, because it is equal to n+sod(n) for n = 21011111993 and 21011112011.

It is a congruent 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, 819733 + ... + 844975.

It is an arithmetic number, because the mean of its divisors is an integer number (2085829677).

Almost surely, 2^21011112022 is an apocalyptic number.

21011112022 is a deficient number, since it is larger than the sum of its proper divisors (12362162810).

21011112022 is a wasteful number, since it uses less digits than its factorization.

21011112022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49743.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21011112022 its reverse (22021111012), we get a palindrome (43032223034).

The spelling of 21011112022 in words is "twenty-one billion, eleven million, one hundred twelve thousand, twenty-two".