3403021221 has 16 divisors (see below), whose sum is σ = 5093491200. Its totient is φ = 2245290624.

The previous prime is 3403021183. The next prime is 3403021243. The reversal of 3403021221 is 1221203043.

3403021221 is a `hidden beast` number, since 340 + 302 + 1 + 2 + 21 = 666.

It is not a de Polignac number, because 3403021221 - 2¹⁴ = 3403004837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3403021194 and 3403021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3403021421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647061 + ... + 652298.

It is an arithmetic number, because the mean of its divisors is an integer number (318343200).

Almost surely, 2^3403021221 is an apocalyptic number.

It is an amenable number.

3403021221 is a deficient number, since it is larger than the sum of its proper divisors (1690469979).

3403021221 is a wasteful number, since it uses less digits than its factorization.

3403021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299465 (or 1299459 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3403021221 is about 58335.4199522040. The cubic root of 3403021221 is about 1504.1398558843.

Adding to 3403021221 its reverse (1221203043), we get a palindrome (4624224264).

The spelling of 3403021221 in words is "three billion, four hundred three million, twenty-one thousand, two hundred twenty-one".