1522121 has 4 divisors (see below), whose sum is σ = 1525200. Its totient is φ = 1519044.

The previous prime is 1522111. The next prime is 1522127. The reversal of 1522121 is 1212251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1522121 - 2⁶ = 1522057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1522096 and 1522105.

It is not an unprimeable number, because it can be changed into a prime (1522127) 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, 611 + ... + 1848.

It is an arithmetic number, because the mean of its divisors is an integer number (381300).

2^1522121 is an apocalyptic number.

It is an amenable number.

1522121 is a deficient number, since it is larger than the sum of its proper divisors (3079).

1522121 is an equidigital number, since it uses as much as digits as its factorization.

1522121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

The product of its digits is 40, while the sum is 14.

The square root of 1522121 is about 1233.7426798162. The cubic root of 1522121 is about 115.0313965945.

Adding to 1522121 its reverse (1212251), we get a palindrome (2734372).

The spelling of 1522121 in words is "one million, five hundred twenty-two thousand, one hundred twenty-one".