2210210121 has 12 divisors (see below), whose sum is σ = 3428081232. Its totient is φ = 1262977128.

The previous prime is 2210210117. The next prime is 2210210129. The reversal of 2210210121 is 1210120122.

It is not a de Polignac number, because 2210210121 - 2² = 2210210117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210210097 and 2210210106.

It is not an unprimeable number, because it can be changed into a prime (2210210129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7517575 + ... + 7517868.

It is an arithmetic number, because the mean of its divisors is an integer number (285673436).

Almost surely, 2^2210210121 is an apocalyptic number.

2210210121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2210210121 is a deficient number, since it is larger than the sum of its proper divisors (1217871111).

2210210121 is a wasteful number, since it uses less digits than its factorization.

2210210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035460 (or 15035453 counting only the distinct ones).

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

The square root of 2210210121 is about 47012.8718650541. The cubic root of 2210210121 is about 1302.6003417133.

Adding to 2210210121 its reverse (1210120122), we get a palindrome (3420330243).

It can be divided in two parts, 22102 and 10121, that added together give a palindrome (32223).

The spelling of 2210210121 in words is "two billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".