2272121 has 8 divisors (see below), whose sum is σ = 2401920. Its totient is φ = 2145808.

The previous prime is 2272117. The next prime is 2272129. The reversal of 2272121 is 1212722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2272121 - 2² = 2272117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2272121.

It is not an unprimeable number, because it can be changed into a prime (2272129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (300240).

2^2272121 is an apocalyptic number.

It is an amenable number.

2272121 is a deficient number, since it is larger than the sum of its proper divisors (129799).

2272121 is a wasteful number, since it uses less digits than its factorization.

2272121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743.

The product of its digits is 112, while the sum is 17.

The square root of 2272121 is about 1507.3556315614. The cubic root of 2272121 is about 131.4651027602.

Adding to 2272121 its reverse (1212722), we get a palindrome (3484843).

The spelling of 2272121 in words is "two million, two hundred seventy-two thousand, one hundred twenty-one".