3220140421 has 2 divisors, whose sum is σ = 3220140422. Its totient is φ = 3220140420.

The previous prime is 3220140389. The next prime is 3220140437. The reversal of 3220140421 is 1240410223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2914380225 + 305760196 = 53985^2 + 17486^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220140421 - 2⁵ = 3220140389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3200140421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610070210 + 1610070211.

It is an arithmetic number, because the mean of its divisors is an integer number (1610070211).

Almost surely, 2^3220140421 is an apocalyptic number.

It is an amenable number.

3220140421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220140421 is an equidigital number, since it uses as much as digits as its factorization.

3220140421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3220140421 is about 56746.2811204400. The cubic root of 3220140421 is about 1476.6977170821.

Adding to 3220140421 its reverse (1240410223), we get a palindrome (4460550644).

It can be divided in two parts, 3220 and 140421, that added together give a square (143641 = 379²).

The spelling of 3220140421 in words is "three billion, two hundred twenty million, one hundred forty thousand, four hundred twenty-one".