21200133020143 has 32 divisors (see below), whose sum is σ = 26880319296000. Its totient is φ = 16238989537920.

The previous prime is 21200133020113. The next prime is 21200133020153. The reversal of 21200133020143 is 34102033100212.

It is a cyclic number.

It is not a de Polignac number, because 21200133020143 - 2²¹ = 21200130922991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200133020113) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 151979953 + ... + 152119381.

It is an arithmetic number, because the mean of its divisors is an integer number (840009978000).

Almost surely, 2^{21200133020143} is an apocalyptic number.

21200133020143 is a deficient number, since it is larger than the sum of its proper divisors (5680186275857).

21200133020143 is a wasteful number, since it uses less digits than its factorization.

21200133020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172975.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21200133020143 its reverse (34102033100212), we get a palindrome (55302166120355).

The spelling of 21200133020143 in words is "twenty-one trillion, two hundred billion, one hundred thirty-three million, twenty thousand, one hundred forty-three".