163121002 has 16 divisors (see below), whose sum is σ = 267486624. Its totient is φ = 73990000.

The previous prime is 163120999. The next prime is 163121029. The reversal of 163121002 is 200121361.

163121002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163121002² = 53216922586968008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252 + ... + 18352.

It is an arithmetic number, because the mean of its divisors is an integer number (16717914).

Almost surely, 2^163121002 is an apocalyptic number.

163121002 is a deficient number, since it is larger than the sum of its proper divisors (104365622).

163121002 is a wasteful number, since it uses less digits than its factorization.

163121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15605.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 163121002 is about 12771.8832597233. The cubic root of 163121002 is about 546.3906934591.

Adding to 163121002 its reverse (200121361), we get a palindrome (363242363).

The spelling of 163121002 in words is "one hundred sixty-three million, one hundred twenty-one thousand, two".