161202101002111 has 4 divisors (see below), whose sum is σ = 173602262617672. Its totient is φ = 148801939386552.

The previous prime is 161202101002043. The next prime is 161202101002123. The reversal of 161202101002111 is 111200101202161.

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 161202101002111 - 2¹¹ = 161202101000063 is a prime.

It is a super-2 number, since 2×161202101002111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161202101032111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6200080807761 + ... + 6200080807786.

It is an arithmetic number, because the mean of its divisors is an integer number (43400565654418).

Almost surely, 2^{161202101002111} is an apocalyptic number.

161202101002111 is a deficient number, since it is larger than the sum of its proper divisors (12400161615561).

161202101002111 is a wasteful number, since it uses less digits than its factorization.

161202101002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400161615560.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 161202101002111 its reverse (111200101202161), we get a palindrome (272402202204272).

The spelling of 161202101002111 in words is "one hundred sixty-one trillion, two hundred two billion, one hundred one million, two thousand, one hundred eleven".