1712010720021 has 16 divisors (see below), whose sum is σ = 2658000472704. Its totient is φ = 959833502784.

The previous prime is 1712010720019. The next prime is 1712010720041. The reversal of 1712010720021 is 1200270102171.

It is not a de Polignac number, because 1712010720021 - 2¹ = 1712010720019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1712010719973 and 1712010720000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1712010720041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769096246 + ... + 769098471.

It is an arithmetic number, because the mean of its divisors is an integer number (166125029544).

Almost surely, 2^{1712010720021} is an apocalyptic number.

It is an amenable number.

1712010720021 is a deficient number, since it is larger than the sum of its proper divisors (945989752683).

1712010720021 is a wasteful number, since it uses less digits than its factorization.

1712010720021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538194780.

The product of its (nonzero) digits is 392, while the sum is 24.

Adding to 1712010720021 its reverse (1200270102171), we get a palindrome (2912280822192).

The spelling of 1712010720021 in words is "one trillion, seven hundred twelve billion, ten million, seven hundred twenty thousand, twenty-one".