1721347122 has 16 divisors (see below), whose sum is σ = 3755666592. Its totient is φ = 521620320.

The previous prime is 1721347099. The next prime is 1721347151. The reversal of 1721347122 is 2217431271.

It is a self number, because there is not a number n which added to its sum of digits gives 1721347122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13040443 + ... + 13040574.

It is an arithmetic number, because the mean of its divisors is an integer number (234729162).

Almost surely, 2^1721347122 is an apocalyptic number.

1721347122 is an abundant number, since it is smaller than the sum of its proper divisors (2034319470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1721347122 is a wasteful number, since it uses less digits than its factorization.

1721347122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26081033.

The product of its digits is 4704, while the sum is 30.

The square root of 1721347122 is about 41489.1205257475. The cubic root of 1721347122 is about 1198.4580013266.

Adding to 1721347122 its reverse (2217431271), we get a palindrome (3938778393).

It can be divided in two parts, 1721 and 347122, that added together give a palindrome (348843).

The spelling of 1721347122 in words is "one billion, seven hundred twenty-one million, three hundred forty-seven thousand, one hundred twenty-two".