11021221101180 has 48 divisors (see below), whose sum is σ = 30862249719840. Its totient is φ = 2938722709248.

The previous prime is 11021221101083. The next prime is 11021221101181. The reversal of 11021221101180 is 8110112212011.

It is a super-2 number, since 2×11021221101180² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221101181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7764519 + ... + 9073598.

It is an arithmetic number, because the mean of its divisors is an integer number (642963535830).

Almost surely, 2^{11021221101180} is an apocalyptic number.

11021221101180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021221101180 is an abundant number, since it is smaller than the sum of its proper divisors (19841028618660).

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

11021221101180 is a wasteful number, since it uses less digits than its factorization.

11021221101180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849038 (or 16849036 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 11021221101180 its reverse (8110112212011), we get a palindrome (19131333313191).

The spelling of 11021221101180 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred eighty".