200121023134 has 4 divisors (see below), whose sum is σ = 300181534704. Its totient is φ = 100060511566.

The previous prime is 200121023119. The next prime is 200121023143. The reversal of 200121023134 is 431320121002.

It is a happy number.

200121023134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030255782 + ... + 50030255785.

It is an arithmetic number, because the mean of its divisors is an integer number (75045383676).

Almost surely, 2^200121023134 is an apocalyptic number.

200121023134 is a deficient number, since it is larger than the sum of its proper divisors (100060511570).

200121023134 is a wasteful number, since it uses less digits than its factorization.

200121023134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100060511569.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 200121023134 its reverse (431320121002), we get a palindrome (631441144136).

The spelling of 200121023134 in words is "two hundred billion, one hundred twenty-one million, twenty-three thousand, one hundred thirty-four".