2111320501 has 4 divisors (see below), whose sum is σ = 2111441452. Its totient is φ = 2111199552.

The previous prime is 2111320499. The next prime is 2111320507. The reversal of 2111320501 is 1050231112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 378263601 + 1733056900 = 19449^2 + 41630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111320501 - 2¹ = 2111320499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111320507) 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, 28740 + ... + 71053.

It is an arithmetic number, because the mean of its divisors is an integer number (527860363).

Almost surely, 2^2111320501 is an apocalyptic number.

It is an amenable number.

2111320501 is a deficient number, since it is larger than the sum of its proper divisors (120951).

2111320501 is an equidigital number, since it uses as much as digits as its factorization.

2111320501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120950.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2111320501 is about 45949.1077280071. The cubic root of 2111320501 is about 1282.8761215089.

Adding to 2111320501 its reverse (1050231112), we get a palindrome (3161551613).

It can be divided in two parts, 21113 and 20501, that added together give a palindrome (41614).

The spelling of 2111320501 in words is "two billion, one hundred eleven million, three hundred twenty thousand, five hundred one".