1121221101986 has 32 divisors (see below), whose sum is σ = 1730808399600. Its totient is φ = 544416768000.

The previous prime is 1121221101967. The next prime is 1121221101989. The reversal of 1121221101986 is 6891011221211.

It can be written as a sum of positive squares in 8 ways, for example, as 887705036761 + 233516065225 = 942181^2 + 483235^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121221101989) 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, 16478636 + ... + 16546536.

Almost surely, 2^{1121221101986} is an apocalyptic number.

1121221101986 is a deficient number, since it is larger than the sum of its proper divisors (609587297614).

1121221101986 is a wasteful number, since it uses less digits than its factorization.

1121221101986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68870.

The product of its (nonzero) digits is 3456, while the sum is 35.

The spelling of 1121221101986 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, nine hundred eighty-six".