1720021215041 has 2 divisors, whose sum is σ = 1720021215042. Its totient is φ = 1720021215040.

The previous prime is 1720021215007. The next prime is 1720021215067. The reversal of 1720021215041 is 1405121200271.

It is an a-pointer prime, because the next prime (1720021215067) can be obtained adding 1720021215041 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1060683711025 + 659337504016 = 1029895^2 + 811996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720021215041 - 2¹⁴ = 1720021198657 is a prime.

It is a super-2 number, since 2×1720021215041² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1720021215041.

It is not a weakly prime, because it can be changed into another prime (1720021815041) 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 as a sum of consecutive naturals, namely, 860010607520 + 860010607521.

It is an arithmetic number, because the mean of its divisors is an integer number (860010607521).

Almost surely, 2^{1720021215041} is an apocalyptic number.

It is an amenable number.

1720021215041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720021215041 is an equidigital number, since it uses as much as digits as its factorization.

1720021215041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The spelling of 1720021215041 in words is "one trillion, seven hundred twenty billion, twenty-one million, two hundred fifteen thousand, forty-one".