221011122 has 8 divisors (see below), whose sum is σ = 442022256. Its totient is φ = 73670372.

The previous prime is 221011103. The next prime is 221011123. The reversal of 221011122 is 221110122.

221011122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

221011122 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221011098 and 221011107.

It is not an unprimeable number, because it can be changed into a prime (221011123) 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, 18417588 + ... + 18417599.

It is an arithmetic number, because the mean of its divisors is an integer number (55252782).

Almost surely, 2^221011122 is an apocalyptic number.

221011122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221011122 is a wasteful number, since it uses less digits than its factorization.

221011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36835192.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 221011122 is about 14866.4428159530. The cubic root of 221011122 is about 604.6045016611.

Adding to 221011122 its reverse (221110122), we get a palindrome (442121244).

The spelling of 221011122 in words is "two hundred twenty-one million, eleven thousand, one hundred twenty-two".