1141221140021 has 4 divisors (see below), whose sum is σ = 1141223763372. Its totient is φ = 1141218516672.

The previous prime is 1141221140011. The next prime is 1141221140023. The reversal of 1141221140021 is 1200411221411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 425867182225 + 715353957796 = 652585^2 + 845786^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141221140021 - 2³⁰ = 1140147398197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1141221139975 and 1141221140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141221140023) 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, 485810 + ... + 1586963.

It is an arithmetic number, because the mean of its divisors is an integer number (285305940843).

Almost surely, 2^{1141221140021} is an apocalyptic number.

It is an amenable number.

1141221140021 is a deficient number, since it is larger than the sum of its proper divisors (2623351).

1141221140021 is an equidigital number, since it uses as much as digits as its factorization.

1141221140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623350.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1141221140021 its reverse (1200411221411), we get a palindrome (2341632361432).

The spelling of 1141221140021 in words is "one trillion, one hundred forty-one billion, two hundred twenty-one million, one hundred forty thousand, twenty-one".