1611170021001 has 8 divisors (see below), whose sum is σ = 2157215091840. Its totient is φ = 1069619148752.

The previous prime is 1611170020961. The next prime is 1611170021009. The reversal of 1611170021001 is 1001200711161.

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 1611170021001 - 2¹⁸ = 1611169758857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1611170021009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123548810 + ... + 1123550243.

It is an arithmetic number, because the mean of its divisors is an integer number (269651886480).

Almost surely, 2^{1611170021001} is an apocalyptic number.

It is an amenable number.

1611170021001 is a deficient number, since it is larger than the sum of its proper divisors (546045070839).

1611170021001 is a wasteful number, since it uses less digits than its factorization.

1611170021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247099295.

The product of its (nonzero) digits is 84, while the sum is 21.

Adding to 1611170021001 its reverse (1001200711161), we get a palindrome (2612370732162).

The spelling of 1611170021001 in words is "one trillion, six hundred eleven billion, one hundred seventy million, twenty-one thousand, one".