2101220000010 has 48 divisors (see below), whose sum is σ = 5610825306216. Its totient is φ = 545181404544.

The previous prime is 2101219999993. The next prime is 2101220000021. The reversal of 2101220000010 is 100000221012.

It can be written as a sum of positive squares in 4 ways, for example, as 2005659261369 + 95560738641 = 1416213^2 + 309129^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2101219999947 and 2101220000001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315495169 + ... + 315501828.

Almost surely, 2^{2101220000010} is an apocalyptic number.

2101220000010 is an abundant number, since it is smaller than the sum of its proper divisors (3509605306206).

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

2101220000010 is a wasteful number, since it uses less digits than its factorization.

2101220000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630997047 (or 630997044 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2101220000010 its reverse (100000221012), we get a palindrome (2201220221022).

The spelling of 2101220000010 in words is "two trillion, one hundred one billion, two hundred twenty million, ten", and thus it is an aban number.