20111121012202 has 32 divisors (see below), whose sum is σ = 32952445194240. Its totient is φ = 9129388232880.

The previous prime is 20111121012179. The next prime is 20111121012209. The reversal of 20111121012202 is 20221012111102.

It is not an unprimeable number, because it can be changed into a prime (20111121012209) 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 15 ways as a sum of consecutive naturals, for example, 50803963 + ... + 51198289.

It is an arithmetic number, because the mean of its divisors is an integer number (1029763912320).

Almost surely, 2^{20111121012202} is an apocalyptic number.

20111121012202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20111121012202 is a deficient number, since it is larger than the sum of its proper divisors (12841324182038).

20111121012202 is a wasteful number, since it uses less digits than its factorization.

20111121012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397386.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111121012202 its reverse (20221012111102), we get a palindrome (40332133123304).

The spelling of 20111121012202 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-one million, twelve thousand, two hundred two".