3102203221 has 4 divisors (see below), whose sum is σ = 3340834252. Its totient is φ = 2863572192.

The previous prime is 3102203191. The next prime is 3102203227. The reversal of 3102203221 is 1223022013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1945251025 + 1156952196 = 44105^2 + 34014^2 .

It is not a de Polignac number, because 3102203221 - 2¹³ = 3102195029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3102203195 and 3102203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102203227) 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, 119315496 + ... + 119315521.

It is an arithmetic number, because the mean of its divisors is an integer number (835208563).

Almost surely, 2^3102203221 is an apocalyptic number.

It is an amenable number.

3102203221 is a deficient number, since it is larger than the sum of its proper divisors (238631031).

3102203221 is a wasteful number, since it uses less digits than its factorization.

3102203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238631030.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3102203221 is about 55697.4256227341. The cubic root of 3102203221 is about 1458.4450858478.

Adding to 3102203221 its reverse (1223022013), we get a palindrome (4325225234).

The spelling of 3102203221 in words is "three billion, one hundred two million, two hundred three thousand, two hundred twenty-one".