1102142221541 has 4 divisors (see below), whose sum is σ = 1106955069900. Its totient is φ = 1097329373184.

The previous prime is 1102142221513. The next prime is 1102142221549. The reversal of 1102142221541 is 1451222412011.

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 1019473896100 + 82668325441 = 1009690^2 + 287521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102142221541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1102142221541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102142221549) 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, 2406423836 + ... + 2406424293.

It is an arithmetic number, because the mean of its divisors is an integer number (276738767475).

Almost surely, 2^{1102142221541} is an apocalyptic number.

It is an amenable number.

1102142221541 is a deficient number, since it is larger than the sum of its proper divisors (4812848359).

1102142221541 is an equidigital number, since it uses as much as digits as its factorization.

1102142221541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812848358.

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 1102142221541 its reverse (1451222412011), we get a palindrome (2553364633552).

The spelling of 1102142221541 in words is "one trillion, one hundred two billion, one hundred forty-two million, two hundred twenty-one thousand, five hundred forty-one".