221021101021112 has 32 divisors (see below), whose sum is σ = 501476447697120. Its totient is φ = 89151368478720.

The previous prime is 221021101021103. The next prime is 221021101021157. The reversal of 221021101021112 is 211120101120122.

221021101021112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116082510089 + ... + 116082511992.

It is an arithmetic number, because the mean of its divisors is an integer number (15671138990535).

Almost surely, 2^{221021101021112} is an apocalyptic number.

It is an amenable number.

221021101021112 is an abundant number, since it is smaller than the sum of its proper divisors (280455346676008).

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

221021101021112 is a wasteful number, since it uses less digits than its factorization.

221021101021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232165022111 (or 232165022107 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221021101021112 its reverse (211120101120122), we get a palindrome (432141202141234).

The spelling of 221021101021112 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred one million, twenty-one thousand, one hundred twelve".