1214021 has 4 divisors (see below), whose sum is σ = 1285452. Its totient is φ = 1142592.

The previous prime is 1214011. The next prime is 1214023. The reversal of 1214021 is 1204121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204121 = 877 ⋅1373.

It can be written as a sum of positive squares in 2 ways, for example, as 784996 + 429025 = 886^2 + 655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1213993 and 1214011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214023) 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, 35690 + ... + 35723.

It is an arithmetic number, because the mean of its divisors is an integer number (321363).

2^1214021 is an apocalyptic number.

It is an amenable number.

1214021 is a deficient number, since it is larger than the sum of its proper divisors (71431).

1214021 is an equidigital number, since it uses as much as digits as its factorization.

1214021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71430.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1214021 is about 1101.8262113419. The cubic root of 1214021 is about 106.6781313632.

Adding to 1214021 its reverse (1204121), we get a palindrome (2418142).

The spelling of 1214021 in words is "one million, two hundred fourteen thousand, twenty-one".