2121354535400 has 48 divisors (see below), whose sum is σ = 4932263853600. Its totient is φ = 848522105280.

The previous prime is 2121354535379. The next prime is 2121354535427. The reversal of 2121354535400 is 45354531212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11025221 + ... + 11215979.

It is an arithmetic number, because the mean of its divisors is an integer number (102755496950).

Almost surely, 2^{2121354535400} is an apocalyptic number.

2121354535400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121354535400 is an abundant number, since it is smaller than the sum of its proper divisors (2810909318200).

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

2121354535400 is a wasteful number, since it uses less digits than its factorization.

2121354535400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246378 (or 246369 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 2121354535400 in words is "two trillion, one hundred twenty-one billion, three hundred fifty-four million, five hundred thirty-five thousand, four hundred".