3121244421 has 8 divisors (see below), whose sum is σ = 4406462784. Its totient is φ = 1958427840.

The previous prime is 3121244389. The next prime is 3121244447. The reversal of 3121244421 is 1244421213.

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

It is not a de Polignac number, because 3121244421 - 2⁵ = 3121244389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3121244391 and 3121244400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121244471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30600385 + ... + 30600486.

It is an arithmetic number, because the mean of its divisors is an integer number (550807848).

Almost surely, 2^3121244421 is an apocalyptic number.

It is an amenable number.

3121244421 is a deficient number, since it is larger than the sum of its proper divisors (1285218363).

3121244421 is a wasteful number, since it uses less digits than its factorization.

3121244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61200891.

The product of its digits is 1536, while the sum is 24.

The square root of 3121244421 is about 55868.0984194021. The cubic root of 3121244421 is about 1461.4229607523.

Adding to 3121244421 its reverse (1244421213), we get a palindrome (4365665634).

The spelling of 3121244421 in words is "three billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred twenty-one".