21211002022 has 32 divisors (see below), whose sum is σ = 36592473600. Its totient is φ = 9032819328.

The previous prime is 21211001993. The next prime is 21211002037. The reversal of 21211002022 is 22020011212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21211001993 and 21211002011.

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, 4691479 + ... + 4695997.

It is an arithmetic number, because the mean of its divisors is an integer number (1143514800).

Almost surely, 2^21211002022 is an apocalyptic number.

21211002022 is a deficient number, since it is larger than the sum of its proper divisors (15381471578).

21211002022 is a wasteful number, since it uses less digits than its factorization.

21211002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21211002022 its reverse (22020011212), we get a palindrome (43231013234).

The spelling of 21211002022 in words is "twenty-one billion, two hundred eleven million, two thousand, twenty-two".