21055355533300 has 72 divisors (see below), whose sum is σ = 50094240638400. Its totient is φ = 7618018003200.

The previous prime is 21055355533297. The next prime is 21055355533349. The reversal of 21055355533300 is 333555355012.

It is a super-3 number, since 3×21055355533300³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47874649 + ... + 48312448.

It is an arithmetic number, because the mean of its divisors is an integer number (695753342200).

Almost surely, 2^{21055355533300} is an apocalyptic number.

21055355533300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21055355533300 is an abundant number, since it is smaller than the sum of its proper divisors (29038885105100).

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

21055355533300 is a wasteful number, since it uses less digits than its factorization.

21055355533300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96187321 (or 96187314 counting only the distinct ones).

The product of its (nonzero) digits is 506250, while the sum is 40.

The spelling of 21055355533300 in words is "twenty-one trillion, fifty-five billion, three hundred fifty-five million, five hundred thirty-three thousand, three hundred".