21312203001030 has 64 divisors (see below), whose sum is σ = 57213967896000. Its totient is φ = 5645111477760.

The previous prime is 21312203000999. The next prime is 21312203001077. The reversal of 21312203001030 is 3010030221312.

21312203001030 is a `hidden beast` number, since 2 + 1 + 312 + 20 + 300 + 1 + 0 + 30 = 666.

It is a super-2 number, since 2×21312203001030² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21312203000994 and 21312203001012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264839251 + ... + 264919710.

It is an arithmetic number, because the mean of its divisors is an integer number (893968248375).

Almost surely, 2^{21312203001030} is an apocalyptic number.

21312203001030 is an abundant number, since it is smaller than the sum of its proper divisors (35901764894970).

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

21312203001030 is a wasteful number, since it uses less digits than its factorization.

21312203001030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529759126 (or 529759120 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21312203001030 its reverse (3010030221312), we get a palindrome (24322233222342).

The spelling of 21312203001030 in words is "twenty-one trillion, three hundred twelve billion, two hundred three million, one thousand, thirty".