1723245011221 has 8 divisors (see below), whose sum is σ = 1746653499360. Its totient is φ = 1699899535152.

The previous prime is 1723245011209. The next prime is 1723245011329. The reversal of 1723245011221 is 1221105423271.

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

It is a cyclic number.

It is not a de Polignac number, because 1723245011221 - 2⁹ = 1723245010709 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 (1723245911221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15697950 + ... + 15807343.

It is an arithmetic number, because the mean of its divisors is an integer number (218331687420).

Almost surely, 2^{1723245011221} is an apocalyptic number.

It is an amenable number.

1723245011221 is a deficient number, since it is larger than the sum of its proper divisors (23408488139).

1723245011221 is an equidigital number, since it uses as much as digits as its factorization.

1723245011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31506035.

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 1723245011221 in words is "one trillion, seven hundred twenty-three billion, two hundred forty-five million, eleven thousand, two hundred twenty-one".