2210222121 has 16 divisors (see below), whose sum is σ = 3044759424. Its totient is φ = 1425060864.

The previous prime is 2210222117. The next prime is 2210222129. The reversal of 2210222121 is 1212220122.

It is not a de Polignac number, because 2210222121 - 2² = 2210222117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2210222121.

It is not an unprimeable number, because it can be changed into a prime (2210222129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41080 + ... + 78153.

It is an arithmetic number, because the mean of its divisors is an integer number (190297464).

Almost surely, 2^2210222121 is an apocalyptic number.

It is an amenable number.

2210222121 is a deficient number, since it is larger than the sum of its proper divisors (834537303).

2210222121 is a wasteful number, since it uses less digits than its factorization.

2210222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119440.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2210222121 is about 47012.9994895029. Note that the first 3 decimals coincide. The cubic root of 2210222121 is about 1302.6026991326.

Adding to 2210222121 its reverse (1212220122), we get a palindrome (3422442243).

The spelling of 2210222121 in words is "two billion, two hundred ten million, two hundred twenty-two thousand, one hundred twenty-one".