2100021003130 has 8 divisors (see below), whose sum is σ = 3780037805652. Its totient is φ = 840008401248.

The previous prime is 2100021003071. The next prime is 2100021003137. The reversal of 2100021003130 is 313001200012.

It can be written as a sum of positive squares in 2 ways, for example, as 1748548694929 + 351472308201 = 1322327^2 + 592851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2100021003130.

It is not an unprimeable number, because it can be changed into a prime (2100021003137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105001050147 + ... + 105001050166.

Almost surely, 2^{2100021003130} is an apocalyptic number.

2100021003130 is a deficient number, since it is larger than the sum of its proper divisors (1680016802522).

2100021003130 is a wasteful number, since it uses less digits than its factorization.

2100021003130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210002100320.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 2100021003130 its reverse (313001200012), we get a palindrome (2413022203142).

The spelling of 2100021003130 in words is "two trillion, one hundred billion, twenty-one million, three thousand, one hundred thirty".