2111321105355 has 96 divisors (see below), whose sum is σ = 4249176712704. Its totient is φ = 876275136000.

The previous prime is 2111321105351. The next prime is 2111321105381. The reversal of 2111321105355 is 5535011231112.

It is not a de Polignac number, because 2111321105355 - 2² = 2111321105351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111321105351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9559320 + ... + 9777690.

It is an arithmetic number, because the mean of its divisors is an integer number (44262257424).

Almost surely, 2^{2111321105355} is an apocalyptic number.

2111321105355 is an abundant number, since it is smaller than the sum of its proper divisors (2137855607349).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111321105355 is a wasteful number, since it uses less digits than its factorization.

2111321105355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219169 (or 219158 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 2111321105355 its reverse (5535011231112), we get a palindrome (7646332336467).

The spelling of 2111321105355 in words is "two trillion, one hundred eleven billion, three hundred twenty-one million, one hundred five thousand, three hundred fifty-five".