2122501 has 4 divisors (see below), whose sum is σ = 2247372. Its totient is φ = 1997632.

The previous prime is 2122499. The next prime is 2122507. The reversal of 2122501 is 1052212.

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 1560001 + 562500 = 1249^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122501 - 2¹ = 2122499 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 (2122507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62410 + ... + 62443.

It is an arithmetic number, because the mean of its divisors is an integer number (561843).

2^2122501 is an apocalyptic number.

It is an amenable number.

2122501 is a deficient number, since it is larger than the sum of its proper divisors (124871).

2122501 is a wasteful number, since it uses less digits than its factorization.

2122501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124870.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2122501 is about 1456.8805716324. The cubic root of 2122501 is about 128.5136626451.

Adding to 2122501 its reverse (1052212), we get a palindrome (3174713).

It can be divided in two parts, 21 and 22501, that added together give a palindrome (22522).

The spelling of 2122501 in words is "two million, one hundred twenty-two thousand, five hundred one".