21202022118 has 8 divisors (see below), whose sum is σ = 42404044248. Its totient is φ = 7067340704.

The previous prime is 21202022117. The next prime is 21202022147. The reversal of 21202022118 is 81122020212.

21202022118 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

21202022118 is an admirable number.

It is a super-2 number, since 2×21202022118² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21202022094 and 21202022103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202022117) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1766835171 + ... + 1766835182.

It is an arithmetic number, because the mean of its divisors is an integer number (5300505531).

Almost surely, 2^21202022118 is an apocalyptic number.

21202022118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202022118 is a wasteful number, since it uses less digits than its factorization.

21202022118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533670358.

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 21202022118 in words is "twenty-one billion, two hundred two million, twenty-two thousand, one hundred eighteen".