161202100012 has 24 divisors (see below), whose sum is σ = 283966137504. Its totient is φ = 80069507712.

The previous prime is 161202100001. The next prime is 161202100019. The reversal of 161202100012 is 210001202161.

It is a super-2 number, since 2×161202100012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161202100019) 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 in 7 ways as a sum of consecutive naturals, for example, 1034058 + ... + 1179694.

It is an arithmetic number, because the mean of its divisors is an integer number (11831922396).

Almost surely, 2^161202100012 is an apocalyptic number.

It is an amenable number.

161202100012 is a deficient number, since it is larger than the sum of its proper divisors (122764037492).

161202100012 is a wasteful number, since it uses less digits than its factorization.

161202100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147465 (or 147463 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 161202100012 its reverse (210001202161), we get a palindrome (371203302173).

The spelling of 161202100012 in words is "one hundred sixty-one billion, two hundred two million, one hundred thousand, twelve".