20021111211002 has 16 divisors (see below), whose sum is σ = 32768758108224. Its totient is φ = 9098577384000.

The previous prime is 20021111211001. The next prime is 20021111211019. The reversal of 20021111211002 is 20011211112002.

It is not an unprimeable number, because it can be changed into a prime (20021111211001) 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 7 ways as a sum of consecutive naturals, for example, 96279374 + ... + 96487097.

It is an arithmetic number, because the mean of its divisors is an integer number (2048047381764).

Almost surely, 2^{20021111211002} is an apocalyptic number.

20021111211002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021111211002 is a deficient number, since it is larger than the sum of its proper divisors (12747646897222).

20021111211002 is a wasteful number, since it uses less digits than its factorization.

20021111211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192771205.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021111211002 its reverse (20011211112002), we get a palindrome (40032322323004).

The spelling of 20021111211002 in words is "twenty trillion, twenty-one billion, one hundred eleven million, two hundred eleven thousand, two".