3402204221 has 4 divisors (see below), whose sum is σ = 3663912252. Its totient is φ = 3140496192.

The previous prime is 3402204191. The next prime is 3402204233. The reversal of 3402204221 is 1224022043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1224022043 = 449 ⋅2726107.

It can be written as a sum of positive squares in 2 ways, for example, as 1775695321 + 1626508900 = 42139^2 + 40330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402204221 - 2³⁰ = 2328462397 is a prime.

It is a super-2 number, since 2×3402204221² = 23149987122780433682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3402204193 and 3402204202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402204241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130853996 + ... + 130854021.

It is an arithmetic number, because the mean of its divisors is an integer number (915978063).

Almost surely, 2^3402204221 is an apocalyptic number.

It is an amenable number.

3402204221 is a deficient number, since it is larger than the sum of its proper divisors (261708031).

3402204221 is a wasteful number, since it uses less digits than its factorization.

3402204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261708030.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3402204221 is about 58328.4169252004. The cubic root of 3402204221 is about 1504.0194745585.

Adding to 3402204221 its reverse (1224022043), we get a palindrome (4626226264).

The spelling of 3402204221 in words is "three billion, four hundred two million, two hundred four thousand, two hundred twenty-one".