1101212221986 has 24 divisors (see below), whose sum is σ = 2386040655024. Its totient is φ = 367058303640.

The previous prime is 1101212221979. The next prime is 1101212222009. The reversal of 1101212221986 is 6891222121011.

It is a self number, because there is not a number n which added to its sum of digits gives 1101212221986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 482400 + ... + 1560491.

It is an arithmetic number, because the mean of its divisors is an integer number (99418360626).

Almost surely, 2^{1101212221986} is an apocalyptic number.

1101212221986 is an abundant number, since it is smaller than the sum of its proper divisors (1284828433038).

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

1101212221986 is a wasteful number, since it uses less digits than its factorization.

1101212221986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072846 (or 2072843 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

Adding to 1101212221986 its reverse (6891222121011), we get a palindrome (7992434342997).

The spelling of 1101212221986 in words is "one trillion, one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, nine hundred eighty-six".