3121220411 has 2 divisors, whose sum is σ = 3121220412. Its totient is φ = 3121220410.

The previous prime is 3121220363. The next prime is 3121220429. The reversal of 3121220411 is 1140221213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121220411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3121220411.

It is not a weakly prime, because it can be changed into another prime (3121240411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560610205 + 1560610206.

It is an arithmetic number, because the mean of its divisors is an integer number (1560610206).

Almost surely, 2^3121220411 is an apocalyptic number.

3121220411 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121220411 is an equidigital number, since it uses as much as digits as its factorization.

3121220411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 3121220411 is about 55867.8835378610. The cubic root of 3121220411 is about 1461.4192134376.

Adding to 3121220411 its reverse (1140221213), we get a palindrome (4261441624).

The spelling of 3121220411 in words is "three billion, one hundred twenty-one million, two hundred twenty thousand, four hundred eleven".