21335554034000 has 40 divisors (see below), whose sum is σ = 51589369659048. Its totient is φ = 8534221612800.

The previous prime is 21335554033951. The next prime is 21335554034021. The reversal of 21335554034000 is 43045553312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1974744425536 + 19360809608464 = 1405256^2 + 4400092^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 5333886509 + ... + 5333890508.

Almost surely, 2^{21335554034000} is an apocalyptic number.

21335554034000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21335554034000 is an abundant number, since it is smaller than the sum of its proper divisors (30253815625048).

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

21335554034000 is a wasteful number, since it uses less digits than its factorization.

21335554034000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10667777040 (or 10667777024 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 21335554034000 its reverse (43045553312), we get a palindrome (21378599587312).

The spelling of 21335554034000 in words is "twenty-one trillion, three hundred thirty-five billion, five hundred fifty-four million, thirty-four thousand".