2202143121 has 6 divisors (see below), whose sum is σ = 3180873410. Its totient is φ = 1468095408.

The previous prime is 2202143107. The next prime is 2202143183. The reversal of 2202143121 is 1213412022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1824229521 + 377913600 = 42711^2 + 19440^2 .

It is not a de Polignac number, because 2202143121 - 2¹⁸ = 2201880977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202143094 and 2202143103.

It is not an unprimeable number, because it can be changed into a prime (2202143221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122341276 + ... + 122341293.

Almost surely, 2^2202143121 is an apocalyptic number.

It is an amenable number.

2202143121 is a deficient number, since it is larger than the sum of its proper divisors (978730289).

2202143121 is a wasteful number, since it uses less digits than its factorization.

2202143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244682575 (or 244682572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2202143121 is about 46926.9977837918. The cubic root of 2202143121 is about 1301.0136317369.

Adding to 2202143121 its reverse (1213412022), we get a palindrome (3415555143).

The spelling of 2202143121 in words is "two billion, two hundred two million, one hundred forty-three thousand, one hundred twenty-one".