2743201557221 has 4 divisors (see below), whose sum is σ = 2781838198944. Its totient is φ = 2704564915500.

The previous prime is 2743201557149. The next prime is 2743201557259. The reversal of 2743201557221 is 1227551023472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2743201557221 - 2³⁰ = 2742127815397 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 (2743201557281) 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, 19318320755 + ... + 19318320896.

It is an arithmetic number, because the mean of its divisors is an integer number (695459549736).

Almost surely, 2^{2743201557221} is an apocalyptic number.

It is an amenable number.

2743201557221 is a deficient number, since it is larger than the sum of its proper divisors (38636641723).

2743201557221 is an equidigital number, since it uses as much as digits as its factorization.

2743201557221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38636641722.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 2743201557221 in words is "two trillion, seven hundred forty-three billion, two hundred one million, five hundred fifty-seven thousand, two hundred twenty-one".