161121002102 has 24 divisors (see below), whose sum is σ = 256856216400. Its totient is φ = 75785651840.

The previous prime is 161121002087. The next prime is 161121002113. The reversal of 161121002102 is 201200121161.

161121002102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1172399 + ... + 1302597.

It is an arithmetic number, because the mean of its divisors is an integer number (10702342350).

Almost surely, 2^161121002102 is an apocalyptic number.

161121002102 is a deficient number, since it is larger than the sum of its proper divisors (95735214298).

161121002102 is a wasteful number, since it uses less digits than its factorization.

161121002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132376 (or 132359 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 161121002102 its reverse (201200121161), we get a palindrome (362321123263).

The spelling of 161121002102 in words is "one hundred sixty-one billion, one hundred twenty-one million, two thousand, one hundred two".