3152220421 has 32 divisors (see below), whose sum is σ = 3764102400. Its totient is φ = 2637730368.

The previous prime is 3152220413. The next prime is 3152220431. The reversal of 3152220421 is 1240222513.

It is a happy number.

It is not a de Polignac number, because 3152220421 - 2³ = 3152220413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3152220392 and 3152220401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3152220431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5762470 + ... + 5763016.

It is an arithmetic number, because the mean of its divisors is an integer number (117628200).

Almost surely, 2^3152220421 is an apocalyptic number.

It is an amenable number.

3152220421 is a deficient number, since it is larger than the sum of its proper divisors (611881979).

3152220421 is an equidigital number, since it uses as much as digits as its factorization.

3152220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 3152220421 is about 56144.6383994055. The cubic root of 3152220421 is about 1466.2415627889.

Adding to 3152220421 its reverse (1240222513), we get a palindrome (4392442934).

The spelling of 3152220421 in words is "three billion, one hundred fifty-two million, two hundred twenty thousand, four hundred twenty-one".