2121200110 has 16 divisors (see below), whose sum is σ = 3941327232. Its totient is φ = 821109600.

The previous prime is 2121200057. The next prime is 2121200131. The reversal of 2121200110 is 110021212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420981 + ... + 3421600.

It is an arithmetic number, because the mean of its divisors is an integer number (246332952).

Almost surely, 2^2121200110 is an apocalyptic number.

2121200110 is a deficient number, since it is larger than the sum of its proper divisors (1820127122).

2121200110 is a wasteful number, since it uses less digits than its factorization.

2121200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842619.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2121200110 is about 46056.4882508426. The cubic root of 2121200110 is about 1284.8740175359.

Adding to 2121200110 its reverse (110021212), we get a palindrome (2231221322).

The spelling of 2121200110 in words is "two billion, one hundred twenty-one million, two hundred thousand, one hundred ten".