21220000212202 has 64 divisors (see below), whose sum is σ = 35142233253120. Its totient is φ = 9529606912000.

The previous prime is 21220000212181. The next prime is 21220000212211. The reversal of 21220000212202 is 20221200002212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2464858074 + ... + 2464866682.

It is an arithmetic number, because the mean of its divisors is an integer number (549097394580).

Almost surely, 2^{21220000212202} is an apocalyptic number.

21220000212202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220000212202 is a deficient number, since it is larger than the sum of its proper divisors (13922233040918).

21220000212202 is a wasteful number, since it uses less digits than its factorization.

21220000212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21220000212202 its reverse (20221200002212), we get a palindrome (41441200214414).

The spelling of 21220000212202 in words is "twenty-one trillion, two hundred twenty billion, two hundred twelve thousand, two hundred two".