21020022102200 has 48 divisors (see below), whose sum is σ = 53314419701160. Its totient is φ = 7643644400000.

The previous prime is 21020022102199. The next prime is 21020022102203. The reversal of 21020022102200 is 220122002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020022102203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4777275551 + ... + 4777279950.

Almost surely, 2^{21020022102200} is an apocalyptic number.

21020022102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020022102200 is an abundant number, since it is smaller than the sum of its proper divisors (32294397598960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21020022102200 is a wasteful number, since it uses less digits than its factorization.

21020022102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554555528 (or 9554555519 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21020022102200 its reverse (220122002012), we get a palindrome (21240144104212).

The spelling of 21020022102200 in words is "twenty-one trillion, twenty billion, twenty-two million, one hundred two thousand, two hundred".