21330530122146 has 64 divisors (see below), whose sum is σ = 49362254772480. Its totient is φ = 6018896505600.

The previous prime is 21330530122117. The next prime is 21330530122199. The reversal of 21330530122146 is 64122103503312.

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, 4648941 + ... + 8017088.

It is an arithmetic number, because the mean of its divisors is an integer number (771285230820).

Almost surely, 2^{21330530122146} is an apocalyptic number.

21330530122146 is an abundant number, since it is smaller than the sum of its proper divisors (28031724650334).

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

21330530122146 is a wasteful number, since it uses less digits than its factorization.

21330530122146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12666539.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 21330530122146 its reverse (64122103503312), we get a palindrome (85452633625458).

The spelling of 21330530122146 in words is "twenty-one trillion, three hundred thirty billion, five hundred thirty million, one hundred twenty-two thousand, one hundred forty-six".