20121111202 has 16 divisors (see below), whose sum is σ = 30712320000. Its totient is φ = 9884057040.

The previous prime is 20121111191. The next prime is 20121111221. The reversal of 20121111202 is 20211112102.

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 7 ways as a sum of consecutive naturals, for example, 8799 + ... + 200797.

It is an arithmetic number, because the mean of its divisors is an integer number (1919520000).

Almost surely, 2^20121111202 is an apocalyptic number.

20121111202 is a deficient number, since it is larger than the sum of its proper divisors (10591208798).

20121111202 is a wasteful number, since it uses less digits than its factorization.

20121111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192921.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121111202 its reverse (20211112102), we get a palindrome (40332223304).

The spelling of 20121111202 in words is "twenty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred two".