11121221022 has 8 divisors (see below), whose sum is σ = 22242442056. Its totient is φ = 3707073672.

The previous prime is 11121221003. The next prime is 11121221029. The reversal of 11121221022 is 22012212111.

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

11121221022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11121220992 and 11121221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121221029) 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, 926768413 + ... + 926768424.

It is an arithmetic number, because the mean of its divisors is an integer number (2780305257).

Almost surely, 2^11121221022 is an apocalyptic number.

11121221022 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.

11121221022 is a wasteful number, since it uses less digits than its factorization.

11121221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853536842.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11121221022 its reverse (22012212111), we get a palindrome (33133433133).

The spelling of 11121221022 in words is "eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-two".