1121722051218 has 32 divisors (see below), whose sum is σ = 2341183896576. Its totient is φ = 357620145168.

The previous prime is 1121722051211. The next prime is 1121722051249. The reversal of 1121722051218 is 8121502271211.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121722051211) 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 15 ways as a sum of consecutive naturals, for example, 1315155 + ... + 1993257.

It is an arithmetic number, because the mean of its divisors is an integer number (73161996768).

Almost surely, 2^{1121722051218} is an apocalyptic number.

1121722051218 is an abundant number, since it is smaller than the sum of its proper divisors (1219461845358).

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

1121722051218 is a wasteful number, since it uses less digits than its factorization.

1121722051218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690118.

The product of its (nonzero) digits is 4480, while the sum is 33.

The spelling of 1121722051218 in words is "one trillion, one hundred twenty-one billion, seven hundred twenty-two million, fifty-one thousand, two hundred eighteen".