21101001220112 has 40 divisors (see below), whose sum is σ = 46137769136640. Its totient is φ = 9260627492480.

The previous prime is 21101001220067. The next prime is 21101001220121. The reversal of 21101001220112 is 21102210010112.

It is a super-2 number, since 2×21101001220112² (a number of 27 digits) contains 22 as substring.

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, 2067099248 + ... + 2067109455.

It is an arithmetic number, because the mean of its divisors is an integer number (1153444228416).

Almost surely, 2^{21101001220112} is an apocalyptic number.

21101001220112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21101001220112 is an abundant number, since it is smaller than the sum of its proper divisors (25036767916528).

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

21101001220112 is a wasteful number, since it uses less digits than its factorization.

21101001220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134208751 (or 4134208745 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21101001220112 its reverse (21102210010112), we get a palindrome (42203211230224).

The spelling of 21101001220112 in words is "twenty-one trillion, one hundred one billion, one million, two hundred twenty thousand, one hundred twelve".