11121221082 has 16 divisors (see below), whose sum is σ = 22246756992. Its totient is φ = 3706354560.

The previous prime is 11121221081. The next prime is 11121221093. The reversal of 11121221082 is 28012212111.

It is not an unprimeable number, because it can be changed into a prime (11121221081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145783 + ... + 208554.

It is an arithmetic number, because the mean of its divisors is an integer number (1390422312).

Almost surely, 2^11121221082 is an apocalyptic number.

11121221082 is an abundant number, since it is smaller than the sum of its proper divisors (11125535910).

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

11121221082 is a wasteful number, since it uses less digits than its factorization.

11121221082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359573.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 11121221082 its reverse (28012212111), we get a palindrome (39133433193).

The spelling of 11121221082 in words is "eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, eighty-two".