11101212021180 has 48 divisors (see below), whose sum is σ = 31090393593504. Its totient is φ = 2959656545280.

The previous prime is 11101212021149. The next prime is 11101212021181. The reversal of 11101212021180 is 8112021210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101212021181) 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, 20564457 + ... + 21097376.

It is an arithmetic number, because the mean of its divisors is an integer number (647716533198).

Almost surely, 2^{11101212021180} is an apocalyptic number.

11101212021180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101212021180 is an abundant number, since it is smaller than the sum of its proper divisors (19989181572324).

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

11101212021180 is a wasteful number, since it uses less digits than its factorization.

11101212021180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666286 (or 41666284 counting only the distinct ones).

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

Adding to 11101212021180 its reverse (8112021210111), we get a palindrome (19213233231291).

The spelling of 11101212021180 in words is "eleven trillion, one hundred one billion, two hundred twelve million, twenty-one thousand, one hundred eighty".