2222013121 has 12 divisors (see below), whose sum is σ = 2355270372. Its totient is φ = 2095951104.

The previous prime is 2222013119. The next prime is 2222013127. The reversal of 2222013121 is 1213102222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 402564096 + 1819449025 = 20064^2 + 42655^2 .

It is not a de Polignac number, because 2222013121 - 2¹ = 2222013119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222013095 and 2222013104.

It is not an unprimeable number, because it can be changed into a prime (2222013127) 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 11 ways as a sum of consecutive naturals, for example, 70905 + ... + 97321.

It is an arithmetic number, because the mean of its divisors is an integer number (196272531).

Almost surely, 2^2222013121 is an apocalyptic number.

It is an amenable number.

2222013121 is a deficient number, since it is larger than the sum of its proper divisors (133257251).

2222013121 is a wasteful number, since it uses less digits than its factorization.

2222013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26688 (or 26669 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2222013121 is about 47138.2341735454. The cubic root of 2222013121 is about 1304.9149489253.

Adding to 2222013121 its reverse (1213102222), we get a palindrome (3435115343).

The spelling of 2222013121 in words is "two billion, two hundred twenty-two million, thirteen thousand, one hundred twenty-one".