11121020356345 has 4 divisors (see below), whose sum is σ = 13345224427620. Its totient is φ = 8896816285072.

The previous prime is 11121020356307. The next prime is 11121020356423. The reversal of 11121020356345 is 54365302012111.

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 7291312259049 + 3829708097296 = 2700243^2 + 1956964^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121020356345 - 2¹³ = 11121020348153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11121020356345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112102035630 + ... + 1112102035639.

It is an arithmetic number, because the mean of its divisors is an integer number (3336306106905).

Almost surely, 2^{11121020356345} is an apocalyptic number.

It is an amenable number.

11121020356345 is a deficient number, since it is larger than the sum of its proper divisors (2224204071275).

11121020356345 is an equidigital number, since it uses as much as digits as its factorization.

11121020356345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224204071274.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 11121020356345 its reverse (54365302012111), we get a palindrome (65486322368456).

The spelling of 11121020356345 in words is "eleven trillion, one hundred twenty-one billion, twenty million, three hundred fifty-six thousand, three hundred forty-five".