21034123143132 has 96 divisors (see below), whose sum is σ = 54473119948800. Its totient is φ = 6263154360000.

The previous prime is 21034123143109. The next prime is 21034123143157. The reversal of 21034123143132 is 23134132143012.

It is a self number, because there is not a number n which added to its sum of digits gives 21034123143132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16930869 + ... + 18130707.

It is an arithmetic number, because the mean of its divisors is an integer number (567428332800).

Almost surely, 2^{21034123143132} is an apocalyptic number.

21034123143132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21034123143132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27236559974400).

21034123143132 is an abundant number, since it is smaller than the sum of its proper divisors (33438996805668).

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

21034123143132 is a wasteful number, since it uses less digits than its factorization.

21034123143132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202167 (or 1202165 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21034123143132 its reverse (23134132143012), we get a palindrome (44168255286144).

The spelling of 21034123143132 in words is "twenty-one trillion, thirty-four billion, one hundred twenty-three million, one hundred forty-three thousand, one hundred thirty-two".