21120221202208 has 24 divisors (see below), whose sum is σ = 41835530198448. Its totient is φ = 10495324643904.

The previous prime is 21120221202193. The next prime is 21120221202211. The reversal of 21120221202208 is 80220212202112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024555866 + ... + 2024566297.

It is an arithmetic number, because the mean of its divisors is an integer number (1743147091602).

Almost surely, 2^{21120221202208} is an apocalyptic number.

It is an amenable number.

21120221202208 is a deficient number, since it is larger than the sum of its proper divisors (20715308996240).

21120221202208 is a wasteful number, since it uses less digits than its factorization.

21120221202208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049122336 (or 4049122328 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The spelling of 21120221202208 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-one million, two hundred two thousand, two hundred eight".