1121201110221 has 8 divisors (see below), whose sum is σ = 1546484290080. Its totient is φ = 721692668592.

The previous prime is 1121201110147. The next prime is 1121201110241. The reversal of 1121201110221 is 1220111021211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121201110221 - 2⁹ = 1121201109709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121201110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121201110241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6443684455 + ... + 6443684628.

It is an arithmetic number, because the mean of its divisors is an integer number (193310536260).

Almost surely, 2^{1121201110221} is an apocalyptic number.

It is an amenable number.

1121201110221 is a deficient number, since it is larger than the sum of its proper divisors (425283179859).

1121201110221 is a wasteful number, since it uses less digits than its factorization.

1121201110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12887369115.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121201110221 its reverse (1220111021211), we get a palindrome (2341312131432).

The spelling of 1121201110221 in words is "one trillion, one hundred twenty-one billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".