21131022143200 has 36 divisors (see below), whose sum is σ = 51586107809040. Its totient is φ = 8452408856960.

The previous prime is 21131022143191. The next prime is 21131022143213. The reversal of 21131022143200 is 234122013112.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 13206888040 + ... + 13206889639.

It is an arithmetic number, because the mean of its divisors is an integer number (1432947439140).

Almost surely, 2^{21131022143200} is an apocalyptic number.

21131022143200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21131022143200 is an abundant number, since it is smaller than the sum of its proper divisors (30455085665840).

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

21131022143200 is a wasteful number, since it uses less digits than its factorization.

21131022143200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26413777699 (or 26413777686 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21131022143200 its reverse (234122013112), we get a palindrome (21365144156312).

The spelling of 21131022143200 in words is "twenty-one trillion, one hundred thirty-one billion, twenty-two million, one hundred forty-three thousand, two hundred".