1115621621141 has 2 divisors, whose sum is σ = 1115621621142. Its totient is φ = 1115621621140.

The previous prime is 1115621621123. The next prime is 1115621621201. The reversal of 1115621621141 is 1411261265111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 676224984241 + 439396636900 = 822329^2 + 662870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115621621141 - 2⁶ = 1115621621077 is a prime.

It is a super-2 number, since 2×1115621621141² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1115621621098 and 1115621621107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115621821141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557810810570 + 557810810571.

It is an arithmetic number, because the mean of its divisors is an integer number (557810810571).

Almost surely, 2^{1115621621141} is an apocalyptic number.

It is an amenable number.

1115621621141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115621621141 is an equidigital number, since it uses as much as digits as its factorization.

1115621621141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 32.

Adding to 1115621621141 its reverse (1411261265111), we get a palindrome (2526882886252).

The spelling of 1115621621141 in words is "one trillion, one hundred fifteen billion, six hundred twenty-one million, six hundred twenty-one thousand, one hundred forty-one".