21202202121112 has 16 divisors (see below), whose sum is σ = 39806368317000. Its totient is φ = 10587170569920.

The previous prime is 21202202121097. The next prime is 21202202121169. The reversal of 21202202121112 is 21112120220212.

It is a super-2 number, since 2×21202202121112² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21202202121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741304862 + ... + 1741317037.

Almost surely, 2^{21202202121112} is an apocalyptic number.

It is an amenable number.

21202202121112 is a deficient number, since it is larger than the sum of its proper divisors (18604166195888).

21202202121112 is a wasteful number, since it uses less digits than its factorization.

21202202121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482622666 (or 3482622662 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21202202121112 its reverse (21112120220212), we get a palindrome (42314322341324).

The spelling of 21202202121112 in words is "twenty-one trillion, two hundred two billion, two hundred two million, one hundred twenty-one thousand, one hundred twelve".