21121001101202 has 16 divisors (see below), whose sum is σ = 32938612574112. Its totient is φ = 10149152328480.

The previous prime is 21121001101199. The next prime is 21121001101217. The reversal of 21121001101202 is 20210110012112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1922182448 + ... + 1922193435.

It is an arithmetic number, because the mean of its divisors is an integer number (2058663285882).

Almost surely, 2^{21121001101202} is an apocalyptic number.

21121001101202 is a deficient number, since it is larger than the sum of its proper divisors (11817611472910).

21121001101202 is a wasteful number, since it uses less digits than its factorization.

21121001101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844375993.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21121001101202 its reverse (20210110012112), we get a palindrome (41331111113314).

The spelling of 21121001101202 in words is "twenty-one trillion, one hundred twenty-one billion, one million, one hundred one thousand, two hundred two".