21243000241002 has 8 divisors (see below), whose sum is σ = 42486000482016. Its totient is φ = 7081000080332.

The previous prime is 21243000240989. The next prime is 21243000241019. The reversal of 21243000241002 is 20014200034212.

It is a sphenic number, since it is the product of 3 distinct primes.

21243000241002 is an admirable number.

It is a super-2 number, since 2×21243000241002² (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 21243000241002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1770250020078 + ... + 1770250020089.

It is an arithmetic number, because the mean of its divisors is an integer number (5310750060252).

Almost surely, 2^{21243000241002} is an apocalyptic number.

21243000241002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21243000241002 is a wasteful number, since it uses less digits than its factorization.

21243000241002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540500040172.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21243000241002 its reverse (20014200034212), we get a palindrome (41257200275214).

The spelling of 21243000241002 in words is "twenty-one trillion, two hundred forty-three billion, two hundred forty-one thousand, two".