2100121010 has 32 divisors (see below), whose sum is σ = 4310479152. Its totient is φ = 729815040.

The previous prime is 2100121003. The next prime is 2100121021. The reversal of 2100121010 is 101210012.

It can be written as a sum of positive squares in 8 ways, for example, as 610238209 + 1489882801 = 24703^2 + 38599^2 .

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, 472931 + ... + 477350.

Almost surely, 2^2100121010 is an apocalyptic number.

2100121010 is an abundant number, since it is smaller than the sum of its proper divisors (2210358142).

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

2100121010 is a wasteful number, since it uses less digits than its factorization.

2100121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950318.

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

The square root of 2100121010 is about 45827.0772578832. The cubic root of 2100121010 is about 1280.6037617983.

Adding to 2100121010 its reverse (101210012), we get a palindrome (2201331022).

The spelling of 2100121010 in words is "two billion, one hundred million, one hundred twenty-one thousand, ten".