2120501 has 4 divisors (see below), whose sum is σ = 2123532. Its totient is φ = 2117472.

The previous prime is 2120473. The next prime is 2120513. The reversal of 2120501 is 1050212.

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 1020100 + 1100401 = 1010^2 + 1049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120501 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 (2120551) 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, 131 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (530883).

2^2120501 is an apocalyptic number.

It is an amenable number.

2120501 is a deficient number, since it is larger than the sum of its proper divisors (3031).

2120501 is a wasteful number, since it uses less digits than its factorization.

2120501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 2120501 is about 1456.1940117993. The cubic root of 2120501 is about 128.4732844783.

Adding to 2120501 its reverse (1050212), we get a palindrome (3170713).

The spelling of 2120501 in words is "two million, one hundred twenty thousand, five hundred one".