20121020202 has 8 divisors (see below), whose sum is σ = 40242040416. Its totient is φ = 6707006732.

The previous prime is 20121020173. The next prime is 20121020237. The reversal of 20121020202 is 20202012102.

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

20121020202 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676751678 + ... + 1676751689.

It is an arithmetic number, because the mean of its divisors is an integer number (5030255052).

Almost surely, 2^20121020202 is an apocalyptic number.

20121020202 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.

20121020202 is a wasteful number, since it uses less digits than its factorization.

20121020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353503372.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20121020202 its reverse (20202012102), we get a palindrome (40323032304).

The spelling of 20121020202 in words is "twenty billion, one hundred twenty-one million, twenty thousand, two hundred two".