21033020142134 has 192 divisors, whose sum is σ = 44030827376640. Its totient is φ = 7309673280000.

The previous prime is 21033020142097. The next prime is 21033020142163. The reversal of 21033020142134 is 43124102033012.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 in 95 ways as a sum of consecutive naturals, for example, 565552412 + ... + 565589600.

It is an arithmetic number, because the mean of its divisors is an integer number (229327225920).

Almost surely, 2^{21033020142134} is an apocalyptic number.

21033020142134 is an abundant number, since it is smaller than the sum of its proper divisors (22997807234506).

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

21033020142134 is a wasteful number, since it uses less digits than its factorization.

21033020142134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37967 (or 37954 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21033020142134 its reverse (43124102033012), we get a palindrome (64157122175146).

The spelling of 21033020142134 in words is "twenty-one trillion, thirty-three billion, twenty million, one hundred forty-two thousand, one hundred thirty-four".