21200211103020 has 48 divisors (see below), whose sum is σ = 60964931394528. Its totient is φ = 5500595312640.

The previous prime is 21200211103009. The next prime is 21200211103079. The reversal of 21200211103020 is 2030111200212.

It is a super-2 number, since 2×21200211103020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4774820101 + ... + 4774824540.

It is an arithmetic number, because the mean of its divisors is an integer number (1270102737386).

Almost surely, 2^{21200211103020} is an apocalyptic number.

21200211103020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21200211103020 is an abundant number, since it is smaller than the sum of its proper divisors (39764720291508).

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

21200211103020 is a wasteful number, since it uses less digits than its factorization.

21200211103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9549644690 (or 9549644688 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21200211103020 its reverse (2030111200212), we get a palindrome (23230322303232).

The spelling of 21200211103020 in words is "twenty-one trillion, two hundred billion, two hundred eleven million, one hundred three thousand, twenty".