21000001100130 has 96 divisors (see below), whose sum is σ = 60827589491760. Its totient is φ = 4990981685760.

The previous prime is 21000001100077. The next prime is 21000001100161. The reversal of 21000001100130 is 3100110000012.

It can be written as a sum of positive squares in 8 ways, for example, as 640692987489 + 20359308112641 = 800433^2 + 4512129^2 .

It is a super-2 number, since 2×21000001100130² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 309426741 + ... + 309494600.

Almost surely, 2^{21000001100130} is an apocalyptic number.

21000001100130 is an abundant number, since it is smaller than the sum of its proper divisors (39827588391630).

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

21000001100130 is a wasteful number, since it uses less digits than its factorization.

21000001100130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618921396 (or 618921393 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 21000001100130 its reverse (3100110000012), we get a palindrome (24100111100142).

The spelling of 21000001100130 in words is "twenty-one trillion, one million, one hundred thousand, one hundred thirty".