21202101020112 has 40 divisors (see below), whose sum is σ = 56660787212640. Its totient is φ = 6823664695680.

The previous prime is 21202101020077. The next prime is 21202101020143. The reversal of 21202101020112 is 21102010120212.

It is a super-2 number, since 2×21202101020112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202101020091 and 21202101020100.

It is a congruent number.

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, 7615695814 + ... + 7615698597.

It is an arithmetic number, because the mean of its divisors is an integer number (1416519680316).

Almost surely, 2^{21202101020112} is an apocalyptic number.

It is an amenable number.

21202101020112 is an abundant number, since it is smaller than the sum of its proper divisors (35458686192528).

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

21202101020112 is a wasteful number, since it uses less digits than its factorization.

21202101020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15231394451 (or 15231394445 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21202101020112 its reverse (21102010120212), we get a palindrome (42304111140324).

The spelling of 21202101020112 in words is "twenty-one trillion, two hundred two billion, one hundred one million, twenty thousand, one hundred twelve".