3421220402 has 4 divisors (see below), whose sum is σ = 5131830606. Its totient is φ = 1710610200.

The previous prime is 3421220371. The next prime is 3421220417. The reversal of 3421220402 is 2040221243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2040221243 = 7993 ⋅255251.

It can be written as a sum of positive squares in only one way, i.e., 2468201761 + 953018641 = 49681^2 + 30871^2 .

It is a super-2 number, since 2×3421220402² = 23409498078122083208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 855305099 + ... + 855305102.

Almost surely, 2^3421220402 is an apocalyptic number.

3421220402 is a deficient number, since it is larger than the sum of its proper divisors (1710610204).

3421220402 is a wasteful number, since it uses less digits than its factorization.

3421220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710610203.

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

The square root of 3421220402 is about 58491.1993551167. The cubic root of 3421220402 is about 1506.8164441016.

Adding to 3421220402 its reverse (2040221243), we get a palindrome (5461441645).

The spelling of 3421220402 in words is "three billion, four hundred twenty-one million, two hundred twenty thousand, four hundred two".