3402012221 has 8 divisors (see below), whose sum is σ = 3413640888. Its totient is φ = 3390400000.

The previous prime is 3402012203. The next prime is 3402012247. The reversal of 3402012221 is 1222102043.

It can be written as a sum of positive squares in 4 ways, for example, as 1143386596 + 2258625625 = 33814^2 + 47525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3402012221 - 2¹⁴ = 3401995837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3402012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518441 + ... + 524961.

It is an arithmetic number, because the mean of its divisors is an integer number (426705111).

Almost surely, 2^3402012221 is an apocalyptic number.

It is an amenable number.

3402012221 is a deficient number, since it is larger than the sum of its proper divisors (11628667).

3402012221 is a wasteful number, since it uses less digits than its factorization.

3402012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3402012221 is about 58326.7710489789. The cubic root of 3402012221 is about 1503.9911814136.

Adding to 3402012221 its reverse (1222102043), we get a palindrome (4624114264).

The spelling of 3402012221 in words is "three billion, four hundred two million, twelve thousand, two hundred twenty-one".