2100111200010 has 48 divisors (see below), whose sum is σ = 5466091985640. Its totient is φ = 559434487680.

The previous prime is 2100111200003. The next prime is 2100111200017. The reversal of 2100111200010 is 100021110012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2100111200003) and next prime (2100111200017).

It can be written as a sum of positive squares in 4 ways, for example, as 1869397173081 + 230714026929 = 1367259^2 + 480327^2 .

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 = 2100111199965 and 2100111200001.

It is not an unprimeable number, because it can be changed into a prime (2100111200017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12314125 + ... + 12483504.

Almost surely, 2^{2100111200010} is an apocalyptic number.

2100111200010 is an abundant number, since it is smaller than the sum of its proper divisors (3365980785630).

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

2100111200010 is a wasteful number, since it uses less digits than its factorization.

2100111200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24798583 (or 24798580 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2100111200010 its reverse (100021110012), we get a palindrome (2200132310022).

The spelling of 2100111200010 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred thousand, ten".