2100030306520 has 64 divisors (see below), whose sum is σ = 4735558080000. Its totient is φ = 838148110848.

The previous prime is 2100030306509. The next prime is 2100030306613. The reversal of 2100030306520 is 256030300012.

It is a junction number, because it is equal to n+sod(n) for n = 2100030306491 and 2100030306500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97696894 + ... + 97718386.

It is an arithmetic number, because the mean of its divisors is an integer number (73993095000).

Almost surely, 2^{2100030306520} is an apocalyptic number.

2100030306520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100030306520 is an abundant number, since it is smaller than the sum of its proper divisors (2635527773480).

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

2100030306520 is a wasteful number, since it uses less digits than its factorization.

2100030306520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26812 (or 26808 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 2100030306520 its reverse (256030300012), we get a palindrome (2356060606532).

The spelling of 2100030306520 in words is "two trillion, one hundred billion, thirty million, three hundred six thousand, five hundred twenty".