2121022110 has 32 divisors (see below), whose sum is σ = 5198764032. Its totient is φ = 553571360.

The previous prime is 2121022109. The next prime is 2121022129. The reversal of 2121022110 is 112201212.

It is a super-2 number, since 2×2121022110² = 8997469582217704200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750726 + ... + 753545.

It is an arithmetic number, because the mean of its divisors is an integer number (162461376).

Almost surely, 2^2121022110 is an apocalyptic number.

2121022110 is an abundant number, since it is smaller than the sum of its proper divisors (3077741922).

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

2121022110 is a wasteful number, since it uses less digits than its factorization.

2121022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504328.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2121022110 is about 46054.5558007023. Note that the first 3 decimals coincide. The cubic root of 2121022110 is about 1284.8380765652.

Adding to 2121022110 its reverse (112201212), we get a palindrome (2233223322).

The spelling of 2121022110 in words is "two billion, one hundred twenty-one million, twenty-two thousand, one hundred ten".