2122461 has 18 divisors (see below), whose sum is σ = 3371550. Its totient is φ = 1285680.

The previous prime is 2122459. The next prime is 2122469. The reversal of 2122461 is 1642212.

It can be written as a sum of positive squares in only one way, i.e., 2013561 + 108900 = 1419^2 + 330^2 .

It is not a de Polignac number, because 2122461 - 2¹ = 2122459 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122469) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115 + ... + 2063.

2^2122461 is an apocalyptic number.

It is an amenable number.

2122461 is a deficient number, since it is larger than the sum of its proper divisors (1249089).

2122461 is a wasteful number, since it uses less digits than its factorization.

2122461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977 (or 1963 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2122461 is about 1456.8668436065. The cubic root of 2122461 is about 128.5128553304.

Adding to 2122461 its reverse (1642212), we get a palindrome (3764673).

Subtracting from 2122461 its reverse (1642212), we obtain a square (480249 = 693²).

The spelling of 2122461 in words is "two million, one hundred twenty-two thousand, four hundred sixty-one".