21320244030030 has 64 divisors (see below), whose sum is σ = 55963772467200. Its totient is φ = 5155257230720.

The previous prime is 21320244030013. The next prime is 21320244030037. The reversal of 21320244030030 is 3003044202312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320244030037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82913790 + ... + 83170529.

It is an arithmetic number, because the mean of its divisors is an integer number (874433944800).

Almost surely, 2^{21320244030030} is an apocalyptic number.

21320244030030 is an abundant number, since it is smaller than the sum of its proper divisors (34643528437170).

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

21320244030030 is a wasteful number, since it uses less digits than its factorization.

21320244030030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166084729.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21320244030030 its reverse (3003044202312), we get a palindrome (24323288232342).

The spelling of 21320244030030 in words is "twenty-one trillion, three hundred twenty billion, two hundred forty-four million, thirty thousand, thirty".