1121211210180 has 24 divisors (see below), whose sum is σ = 3139391388672. Its totient is φ = 298989656032.

The previous prime is 1121211210139. The next prime is 1121211210181. The reversal of 1121211210180 is 810121121211.

It is a super-2 number, since 2×1121211210180² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121211210181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9343426692 + ... + 9343426811.

It is an arithmetic number, because the mean of its divisors is an integer number (130807974528).

Almost surely, 2^{1121211210180} is an apocalyptic number.

1121211210180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121211210180 is an abundant number, since it is smaller than the sum of its proper divisors (2018180178492).

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

1121211210180 is a wasteful number, since it uses less digits than its factorization.

1121211210180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18686853515 (or 18686853513 counting only the distinct ones).

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

Adding to 1121211210180 its reverse (810121121211), we get a palindrome (1931332331391).

The spelling of 1121211210180 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, one hundred eighty".