2422121 has 4 divisors (see below), whose sum is σ = 2608452. Its totient is φ = 2235792.

The previous prime is 2422111. The next prime is 2422169. The reversal of 2422121 is 1212242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1212242 = 2 ⋅606121.

It can be written as a sum of positive squares in 2 ways, for example, as 290521 + 2131600 = 539^2 + 1460^2 .

It is not a de Polignac number, because 2422121 - 2¹⁴ = 2405737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2422096 and 2422105.

It is not an unprimeable number, because it can be changed into a prime (2422111) 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, 93146 + ... + 93171.

It is an arithmetic number, because the mean of its divisors is an integer number (652113).

2^2422121 is an apocalyptic number.

It is an amenable number.

2422121 is a deficient number, since it is larger than the sum of its proper divisors (186331).

2422121 is a wasteful number, since it uses less digits than its factorization.

2422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186330.

The product of its digits is 64, while the sum is 14.

The square root of 2422121 is about 1556.3164845236. The cubic root of 2422121 is about 134.2966805914.

Adding to 2422121 its reverse (1212242), we get a palindrome (3634363).

It can be divided in two parts, 24221 and 21, that added together give a palindrome (24242).

The spelling of 2422121 in words is "two million, four hundred twenty-two thousand, one hundred twenty-one".