1001601016111 has 4 divisors (see below), whose sum is σ = 1001665117800. Its totient is φ = 1001536914424.

The previous prime is 1001601016063. The next prime is 1001601016123. The reversal of 1001601016111 is 1116101061001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001601016111 - 2²⁹ = 1001064145199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001601016151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32027401 + ... + 32058658.

It is an arithmetic number, because the mean of its divisors is an integer number (250416279450).

Almost surely, 2^{1001601016111} is an apocalyptic number.

1001601016111 is a deficient number, since it is larger than the sum of its proper divisors (64101689).

1001601016111 is an equidigital number, since it uses as much as digits as its factorization.

1001601016111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64101688.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 1001601016111 its reverse (1116101061001), we get a palindrome (2117702077112).

The spelling of 1001601016111 in words is "one trillion, one billion, six hundred one million, sixteen thousand, one hundred eleven".