20021102202112 has 72 divisors (see below), whose sum is σ = 43669874404800. Its totient is φ = 9085307412480.

The previous prime is 20021102202107. The next prime is 20021102202121. The reversal of 20021102202112 is 21120220112002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4247913 + ... + 7621480.

It is an arithmetic number, because the mean of its divisors is an integer number (606526033400).

Almost surely, 2^{20021102202112} is an apocalyptic number.

20021102202112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021102202112 is an abundant number, since it is smaller than the sum of its proper divisors (23648772202688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021102202112 is a wasteful number, since it uses less digits than its factorization.

20021102202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11870019 (or 11870005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021102202112 its reverse (21120220112002), we get a palindrome (41141322314114).

The spelling of 20021102202112 in words is "twenty trillion, twenty-one billion, one hundred two million, two hundred two thousand, one hundred twelve".