21020220020112 has 40 divisors (see below), whose sum is σ = 56053920057600. Its totient is φ = 6780716135040.

The previous prime is 21020220020099. The next prime is 21020220020123. The reversal of 21020220020112 is 21102002202012.

It is a super-3 number, since 3×21020220020112³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21020220020091 and 21020220020100.

It is an unprimeable number.

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, 7063244487 + ... + 7063247462.

It is an arithmetic number, because the mean of its divisors is an integer number (1401348001440).

Almost surely, 2^{21020220020112} is an apocalyptic number.

It is an amenable number.

21020220020112 is an abundant number, since it is smaller than the sum of its proper divisors (35033700037488).

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

21020220020112 is a wasteful number, since it uses less digits than its factorization.

21020220020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126491991 (or 14126491985 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21020220020112 its reverse (21102002202012), we get a palindrome (42122222222124).

The spelling of 21020220020112 in words is "twenty-one trillion, twenty billion, two hundred twenty million, twenty thousand, one hundred twelve".