21002133332120 has 32 divisors (see below), whose sum is σ = 47438670837600. Its totient is φ = 8368165183488.

The previous prime is 21002133332111. The next prime is 21002133332129. The reversal of 21002133332120 is 2123333120012.

It is an interprime number because it is at equal distance from previous prime (21002133332111) and next prime (21002133332129).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002133332129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1021494260 + ... + 1021514819.

It is an arithmetic number, because the mean of its divisors is an integer number (1482458463675).

Almost surely, 2^{21002133332120} is an apocalyptic number.

21002133332120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002133332120 is an abundant number, since it is smaller than the sum of its proper divisors (26436537505480).

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

21002133332120 is a wasteful number, since it uses less digits than its factorization.

21002133332120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043009347 (or 2043009343 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21002133332120 its reverse (2123333120012), we get a palindrome (23125466452132).

The spelling of 21002133332120 in words is "twenty-one trillion, two billion, one hundred thirty-three million, three hundred thirty-two thousand, one hundred twenty".