21103200022120 has 64 divisors (see below), whose sum is σ = 47687968627200. Its totient is φ = 8404711787520.

The previous prime is 21103200022097. The next prime is 21103200022129. The reversal of 21103200022120 is 2122000230112.

It is a happy number.

It is a super-3 number, since 3×21103200022120³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21103200022094 and 21103200022103.

It is not an unprimeable number, because it can be changed into a prime (21103200022129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53082241 + ... + 53478319.

It is an arithmetic number, because the mean of its divisors is an integer number (745124509800).

Almost surely, 2^{21103200022120} is an apocalyptic number.

21103200022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103200022120 is an abundant number, since it is smaller than the sum of its proper divisors (26584768605080).

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

21103200022120 is a wasteful number, since it uses less digits than its factorization.

21103200022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401858 (or 401854 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21103200022120 its reverse (2122000230112), we get a palindrome (23225200252232).

The spelling of 21103200022120 in words is "twenty-one trillion, one hundred three billion, two hundred million, twenty-two thousand, one hundred twenty".