21110002022 has 32 divisors (see below), whose sum is σ = 33624914400. Its totient is φ = 9911697408.

The previous prime is 21110001949. The next prime is 21110002051. The reversal of 21110002022 is 22020001112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21110001994 and 21110002012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4000778 + ... + 4006050.

It is an arithmetic number, because the mean of its divisors is an integer number (1050778575).

Almost surely, 2^21110002022 is an apocalyptic number.

21110002022 is a deficient number, since it is larger than the sum of its proper divisors (12514912378).

21110002022 is a wasteful number, since it uses less digits than its factorization.

21110002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21110002022 its reverse (22020001112), we get a palindrome (43130003134).

The spelling of 21110002022 in words is "twenty-one billion, one hundred ten million, two thousand, twenty-two".