2100001011020 has 48 divisors (see below), whose sum is σ = 4811011027200. Its totient is φ = 763620918720.

The previous prime is 2100001010993. The next prime is 2100001011037. The reversal of 2100001011020 is 201101000012.

It is a super-2 number, since 2×2100001011020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100001010989 and 2100001011007.

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, 18409721 + ... + 18523439.

It is an arithmetic number, because the mean of its divisors is an integer number (100229396400).

Almost surely, 2^{2100001011020} is an apocalyptic number.

2100001011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100001011020 is an abundant number, since it is smaller than the sum of its proper divisors (2711010016180).

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

2100001011020 is a wasteful number, since it uses less digits than its factorization.

2100001011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197678 (or 197676 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2100001011020 its reverse (201101000012), we get a palindrome (2301102011032).

The spelling of 2100001011020 in words is "two trillion, one hundred billion, one million, eleven thousand, twenty".