2211022121 has 16 divisors (see below), whose sum is σ = 2778316800. Its totient is φ = 1709300880.

The previous prime is 2211022111. The next prime is 2211022123. The reversal of 2211022121 is 1212201122.

It is a de Polignac number, because none of the positive numbers 2^k-2211022121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211022096 and 2211022105.

It is not an unprimeable number, because it can be changed into a prime (2211022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103271 + ... + 122828.

It is an arithmetic number, because the mean of its divisors is an integer number (173644800).

Almost surely, 2^2211022121 is an apocalyptic number.

It is an amenable number.

2211022121 is a deficient number, since it is larger than the sum of its proper divisors (567294679).

2211022121 is a wasteful number, since it uses less digits than its factorization.

2211022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226244.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2211022121 is about 47021.5070047739. The cubic root of 2211022121 is about 1302.7598411752.

Adding to 2211022121 its reverse (1212201122), we get a palindrome (3423223243).

The spelling of 2211022121 in words is "two billion, two hundred eleven million, twenty-two thousand, one hundred twenty-one".