200021113542 has 32 divisors (see below), whose sum is σ = 423153681408. Its totient is φ = 62901216576.

The previous prime is 200021113489. The next prime is 200021113549. The reversal of 200021113542 is 245311120002.

200021113542 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021113549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9917518 + ... + 9937665.

It is an arithmetic number, because the mean of its divisors is an integer number (13223552544).

Almost surely, 2^200021113542 is an apocalyptic number.

200021113542 is an abundant number, since it is smaller than the sum of its proper divisors (223132567866).

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

200021113542 is a wasteful number, since it uses less digits than its factorization.

200021113542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19855284.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 200021113542 its reverse (245311120002), we get a palindrome (445332233544).

The spelling of 200021113542 in words is "two hundred billion, twenty-one million, one hundred thirteen thousand, five hundred forty-two".