2121201110 has 16 divisors (see below), whose sum is σ = 4363613856. Its totient is φ = 727268928.

The previous prime is 2121201073. The next prime is 2121201119. The reversal of 2121201110 is 111021212.

It is a junction number, because it is equal to n+sod(n) for n = 2121201091 and 2121201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15151367 + ... + 15151506.

It is an arithmetic number, because the mean of its divisors is an integer number (272725866).

Almost surely, 2^2121201110 is an apocalyptic number.

2121201110 is an abundant number, since it is smaller than the sum of its proper divisors (2242412746).

2121201110 is a wasteful number, since it uses less digits than its factorization.

2121201110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302887.

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

The square root of 2121201110 is about 46056.4991070750. The cubic root of 2121201110 is about 1284.8742194458.

Adding to 2121201110 its reverse (111021212), we get a palindrome (2232222322).

The spelling of 2121201110 in words is "two billion, one hundred twenty-one million, two hundred one thousand, one hundred ten".