21120220020202 has 16 divisors (see below), whose sum is σ = 31712236365600. Its totient is φ = 10549475982000.

The previous prime is 21120220020161. The next prime is 21120220020257. The reversal of 21120220020202 is 20202002202112.

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, 30122049 + ... + 30815227.

It is an arithmetic number, because the mean of its divisors is an integer number (1982014772850).

Almost surely, 2^{21120220020202} is an apocalyptic number.

21120220020202 is a deficient number, since it is larger than the sum of its proper divisors (10592016345398).

21120220020202 is a wasteful number, since it uses less digits than its factorization.

21120220020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708501.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21120220020202 its reverse (20202002202112), we get a palindrome (41322222222314).

The spelling of 21120220020202 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty million, twenty thousand, two hundred two".