1142102441221 has 4 divisors (see below), whose sum is σ = 1305259932832. Its totient is φ = 978944949612.

The previous prime is 1142102441189. The next prime is 1142102441297. The reversal of 1142102441221 is 1221442012411.

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 not a de Polignac number, because 1142102441221 - 2⁵ = 1142102441189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142102445221) 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 3 ways as a sum of consecutive naturals, for example, 81578745795 + ... + 81578745808.

It is an arithmetic number, because the mean of its divisors is an integer number (326314983208).

Almost surely, 2^{1142102441221} is an apocalyptic number.

It is an amenable number.

1142102441221 is a deficient number, since it is larger than the sum of its proper divisors (163157491611).

1142102441221 is an equidigital number, since it uses as much as digits as its factorization.

1142102441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163157491610.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1142102441221 its reverse (1221442012411), we get a palindrome (2363544453632).

The spelling of 1142102441221 in words is "one trillion, one hundred forty-two billion, one hundred two million, four hundred forty-one thousand, two hundred twenty-one".