2121602002163 has 16 divisors (see below), whose sum is σ = 2438808415680. Its totient is φ = 1807931664000.

The previous prime is 2121602002159. The next prime is 2121602002183. The reversal of 2121602002163 is 3612002061212.

It is a happy number.

It is not a de Polignac number, because 2121602002163 - 2² = 2121602002159 is a prime.

It is a super-3 number, since 3×2121602002163³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121602002183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4046813 + ... + 4540913.

It is an arithmetic number, because the mean of its divisors is an integer number (152425525980).

Almost surely, 2^{2121602002163} is an apocalyptic number.

2121602002163 is a deficient number, since it is larger than the sum of its proper divisors (317206413517).

2121602002163 is a wasteful number, since it uses less digits than its factorization.

2121602002163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497678.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 2121602002163 its reverse (3612002061212), we get a palindrome (5733604063375).

The spelling of 2121602002163 in words is "two trillion, one hundred twenty-one billion, six hundred two million, two thousand, one hundred sixty-three".