2100001011210 has 96 divisors (see below), whose sum is σ = 5670593091072. Its totient is φ = 559172652480.

The previous prime is 2100001011203. The next prime is 2100001011253. The reversal of 2100001011210 is 121101000012.

It is a happy number.

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 = 2100001011192 and 2100001011201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1006855 + ... + 2283365.

It is an arithmetic number, because the mean of its divisors is an integer number (59068678032).

Almost surely, 2^{2100001011210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100001011210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2835296545536).

2100001011210 is an abundant number, since it is smaller than the sum of its proper divisors (3570592079862).

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

2100001011210 is a wasteful number, since it uses less digits than its factorization.

2100001011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277210 (or 1277198 counting only the distinct ones).

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

Adding to 2100001011210 its reverse (121101000012), we get a palindrome (2221102011222).

The spelling of 2100001011210 in words is "two trillion, one hundred billion, one million, eleven thousand, two hundred ten".