21021200211022 has 32 divisors (see below), whose sum is σ = 34797488220000. Its totient is φ = 9444291225600.

The previous prime is 21021200211017. The next prime is 21021200211047. The reversal of 21021200211022 is 22011200212012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21021200210987 and 21021200211005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3429822 + ... + 7335262.

It is an arithmetic number, because the mean of its divisors is an integer number (1087421506875).

Almost surely, 2^{21021200211022} is an apocalyptic number.

21021200211022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21021200211022 is a deficient number, since it is larger than the sum of its proper divisors (13776288008978).

21021200211022 is a wasteful number, since it uses less digits than its factorization.

21021200211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908292.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21021200211022 its reverse (22011200212012), we get a palindrome (43032400423034).

The spelling of 21021200211022 in words is "twenty-one trillion, twenty-one billion, two hundred million, two hundred eleven thousand, twenty-two".