21303011111020 has 24 divisors (see below), whose sum is σ = 45021268074384. Its totient is φ = 8466929255616.

The previous prime is 21303011111009. The next prime is 21303011111059. The reversal of 21303011111020 is 2011111030312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21303011110985 and 21303011111003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3392196082 + ... + 3392202361.

It is an arithmetic number, because the mean of its divisors is an integer number (1875886169766).

Almost surely, 2^{21303011111020} is an apocalyptic number.

21303011111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303011111020 is an abundant number, since it is smaller than the sum of its proper divisors (23718256963364).

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

21303011111020 is a wasteful number, since it uses less digits than its factorization.

21303011111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784398609 (or 6784398607 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21303011111020 its reverse (2011111030312), we get a palindrome (23314122141332).

The spelling of 21303011111020 in words is "twenty-one trillion, three hundred three billion, eleven million, one hundred eleven thousand, twenty".