21142311625000 has 112 divisors (see below), whose sum is σ = 49560256245600. Its totient is φ = 8455457400000.

The previous prime is 21142311624953. The next prime is 21142311625013. The reversal of 21142311625000 is 52611324112.

It is a super-2 number, since 2×21142311625000² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21142311625000.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 984864267 + ... + 984885733.

Almost surely, 2^{21142311625000} is an apocalyptic number.

21142311625000 is a gapful number since it is divisible by the number (20) 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 21142311625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24780128122800).

21142311625000 is an abundant number, since it is smaller than the sum of its proper divisors (28417944620600).

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

21142311625000 is an frugal number, since it uses more digits than its factorization.

21142311625000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29382 (or 29353 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 21142311625000 its reverse (52611324112), we get a palindrome (21194922949112).

The spelling of 21142311625000 in words is "twenty-one trillion, one hundred forty-two billion, three hundred eleven million, six hundred twenty-five thousand".