21313333110020 has 48 divisors (see below), whose sum is σ = 54160940615040. Its totient is φ = 6877579759104.

The previous prime is 21313333109941. The next prime is 21313333110029. The reversal of 21313333110020 is 2001133331312.

It is not an unprimeable number, because it can be changed into a prime (21313333110029) 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, 4477588610 + ... + 4477593369.

It is an arithmetic number, because the mean of its divisors is an integer number (1128352929480).

Almost surely, 2^{21313333110020} is an apocalyptic number.

21313333110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313333110020 is an abundant number, since it is smaller than the sum of its proper divisors (32847607505020).

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

21313333110020 is a wasteful number, since it uses less digits than its factorization.

21313333110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8955182012 (or 8955182010 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21313333110020 its reverse (2001133331312), we get a palindrome (23314466441332).

It can be divided in two parts, 21313 and 333110020, that added together give a palindrome (333131333).

The spelling of 21313333110020 in words is "twenty-one trillion, three hundred thirteen billion, three hundred thirty-three million, one hundred ten thousand, twenty".