1721225333055 has 16 divisors (see below), whose sum is σ = 2754008060544. Its totient is φ = 917971001760.

The previous prime is 1721225333053. The next prime is 1721225333083. The reversal of 1721225333055 is 5503335221271.

It is not a de Polignac number, because 1721225333055 - 2¹ = 1721225333053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1721225333053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64081 + ... + 1856490.

It is an arithmetic number, because the mean of its divisors is an integer number (172125503784).

Almost surely, 2^{1721225333055} is an apocalyptic number.

1721225333055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1721225333055 is a deficient number, since it is larger than the sum of its proper divisors (1032782727489).

1721225333055 is a wasteful number, since it uses less digits than its factorization.

1721225333055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980326.

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 1721225333055 in words is "one trillion, seven hundred twenty-one billion, two hundred twenty-five million, three hundred thirty-three thousand, fifty-five".