1162001012221 has 4 divisors (see below), whose sum is σ = 1328001156832. Its totient is φ = 996000867612.

The previous prime is 1162001012219. The next prime is 1162001012273. The reversal of 1162001012221 is 1222101002611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1162001012221 - 2¹ = 1162001012219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162001012321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83000072295 + ... + 83000072308.

It is an arithmetic number, because the mean of its divisors is an integer number (332000289208).

Almost surely, 2^{1162001012221} is an apocalyptic number.

It is an amenable number.

1162001012221 is a deficient number, since it is larger than the sum of its proper divisors (166000144611).

1162001012221 is an equidigital number, since it uses as much as digits as its factorization.

1162001012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166000144610.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1162001012221 its reverse (1222101002611), we get a palindrome (2384102014832).

The spelling of 1162001012221 in words is "one trillion, one hundred sixty-two billion, one million, twelve thousand, two hundred twenty-one".