21202011102112 has 24 divisors (see below), whose sum is σ = 41741593016256. Its totient is φ = 10600971605952.

The previous prime is 21202011102091. The next prime is 21202011102113. The reversal of 21202011102112 is 21120111020212.

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

It is not an unprimeable number, because it can be changed into a prime (21202011102113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11307513 + ... + 13048519.

It is an arithmetic number, because the mean of its divisors is an integer number (1739233042344).

Almost surely, 2^{21202011102112} is an apocalyptic number.

It is an amenable number.

21202011102112 is a deficient number, since it is larger than the sum of its proper divisors (20539581914144).

21202011102112 is a wasteful number, since it uses less digits than its factorization.

21202011102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121580 (or 2121572 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21202011102112 its reverse (21120111020212), we get a palindrome (42322122122324).

The spelling of 21202011102112 in words is "twenty-one trillion, two hundred two billion, eleven million, one hundred two thousand, one hundred twelve".