21112220221120 has 112 divisors (see below), whose sum is σ = 57456599051520. Its totient is φ = 7238324358144.

The previous prime is 21112220221111. The next prime is 21112220221201. The reversal of 21112220221120 is 2112202221112.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184382127 + ... + 184496593.

Almost surely, 2^{21112220221120} is an apocalyptic number.

21112220221120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112220221120 is an abundant number, since it is smaller than the sum of its proper divisors (36344378830400).

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

21112220221120 is a wasteful number, since it uses less digits than its factorization.

21112220221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196830 (or 196820 counting only the distinct ones).

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

Adding to 21112220221120 its reverse (2112202221112), we get a palindrome (23224422442232).

The spelling of 21112220221120 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty".