21330203331030 has 64 divisors (see below), whose sum is σ = 55846796544000. Its totient is φ = 5170917086720.

The previous prime is 21330203331029. The next prime is 21330203331037. The reversal of 21330203331030 is 3013330203312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330203331037) 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, 70336366 + ... + 70638974.

It is an arithmetic number, because the mean of its divisors is an integer number (872606196000).

Almost surely, 2^{21330203331030} is an apocalyptic number.

21330203331030 is an abundant number, since it is smaller than the sum of its proper divisors (34516593212970).

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

21330203331030 is a wasteful number, since it uses less digits than its factorization.

21330203331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516229.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21330203331030 its reverse (3013330203312), we get a palindrome (24343533534342).

The spelling of 21330203331030 in words is "twenty-one trillion, three hundred thirty billion, two hundred three million, three hundred thirty-one thousand, thirty".