2102210121 has 32 divisors (see below), whose sum is σ = 3138370560. Its totient is φ = 1240891200.

The previous prime is 2102210119. The next prime is 2102210129. The reversal of 2102210121 is 1210122012.

It is not a de Polignac number, because 2102210121 - 2¹ = 2102210119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102210097 and 2102210106.

It is not an unprimeable number, because it can be changed into a prime (2102210129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202270 + ... + 212408.

It is an arithmetic number, because the mean of its divisors is an integer number (98074080).

Almost surely, 2^2102210121 is an apocalyptic number.

It is an amenable number.

2102210121 is a deficient number, since it is larger than the sum of its proper divisors (1036160439).

2102210121 is a wasteful number, since it uses less digits than its factorization.

2102210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10317.

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

The square root of 2102210121 is about 45849.8650052538. The cubic root of 2102210121 is about 1281.0282511148.

Adding to 2102210121 its reverse (1210122012), we get a palindrome (3312332133).

The spelling of 2102210121 in words is "two billion, one hundred two million, two hundred ten thousand, one hundred twenty-one".