3221041220357 has 4 divisors (see below), whose sum is σ = 3222167067756. Its totient is φ = 3219915372960.

The previous prime is 3221041220323. The next prime is 3221041220363. The reversal of 3221041220357 is 7530221401223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2778508936996 + 442532283361 = 1666886^2 + 665231^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221041220357 - 2²⁰ = 3221040171781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221041220387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562919408 + ... + 562925129.

It is an arithmetic number, because the mean of its divisors is an integer number (805541766939).

Almost surely, 2^{3221041220357} is an apocalyptic number.

It is an amenable number.

3221041220357 is a deficient number, since it is larger than the sum of its proper divisors (1125847399).

3221041220357 is a wasteful number, since it uses less digits than its factorization.

3221041220357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125847398.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 3221041220357 in words is "three trillion, two hundred twenty-one billion, forty-one million, two hundred twenty thousand, three hundred fifty-seven".