2121120110 has 16 divisors (see below), whose sum is σ = 3822476400. Its totient is φ = 847456896.

The previous prime is 2121120061. The next prime is 2121120137. The reversal of 2121120110 is 110211212.

It is a junction number, because it is equal to n+sod(n) for n = 2121120091 and 2121120100.

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, 114875 + ... + 132054.

It is an arithmetic number, because the mean of its divisors is an integer number (238904775).

Almost surely, 2^2121120110 is an apocalyptic number.

2121120110 is a deficient number, since it is larger than the sum of its proper divisors (1701356290).

2121120110 is a wasteful number, since it uses less digits than its factorization.

2121120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247795.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2121120110 is about 46055.6197439574. The cubic root of 2121120110 is about 1284.8578645394.

Adding to 2121120110 its reverse (110211212), we get a palindrome (2231331322).

The spelling of 2121120110 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, one hundred ten".