21202111022 has 32 divisors (see below), whose sum is σ = 33727809024. Its totient is φ = 9975196000.

The previous prime is 21202110977. The next prime is 21202111031. The reversal of 21202111022 is 22011120212.

It is a junction number, because it is equal to n+sod(n) for n = 21202110988 and 21202111006.

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, 1518272 + ... + 1532172.

It is an arithmetic number, because the mean of its divisors is an integer number (1053994032).

Almost surely, 2^21202111022 is an apocalyptic number.

21202111022 is a deficient number, since it is larger than the sum of its proper divisors (12525698002).

21202111022 is a wasteful number, since it uses less digits than its factorization.

21202111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14464.

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

Adding to 21202111022 its reverse (22011120212), we get a palindrome (43213231234).

The spelling of 21202111022 in words is "twenty-one billion, two hundred two million, one hundred eleven thousand, twenty-two".