2122121110 has 16 divisors (see below), whose sum is σ = 3951536400. Its totient is φ = 819577696.

The previous prime is 2122121041. The next prime is 2122121119. The reversal of 2122121110 is 111212212.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658540 + ... + 3659119.

It is an arithmetic number, because the mean of its divisors is an integer number (246971025).

Almost surely, 2^2122121110 is an apocalyptic number.

2122121110 is a deficient number, since it is larger than the sum of its proper divisors (1829415290).

2122121110 is a wasteful number, since it uses less digits than its factorization.

2122121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317695.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2122121110 is about 46066.4857570013. The cubic root of 2122121110 is about 1285.0599496626.

Adding to 2122121110 its reverse (111212212), we get a palindrome (2233333322).

The spelling of 2122121110 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred ten".