11402021 has 4 divisors (see below), whose sum is σ = 11412192. Its totient is φ = 11391852.

The previous prime is 11402011. The next prime is 11402023. The reversal of 11402021 is 12020411.

11402021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11402021 - 2¹⁰ = 11400997 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 = 11401993 and 11402011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402023) 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, 3161 + ... + 5726.

It is an arithmetic number, because the mean of its divisors is an integer number (2853048).

Almost surely, 2^11402021 is an apocalyptic number.

It is an amenable number.

11402021 is a deficient number, since it is larger than the sum of its proper divisors (10171).

11402021 is an equidigital number, since it uses as much as digits as its factorization.

11402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170.

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

The square root of 11402021 is about 3376.6878742342. The cubic root of 11402021 is about 225.0750103812.

Adding to 11402021 its reverse (12020411), we get a palindrome (23422432).

The spelling of 11402021 in words is "eleven million, four hundred two thousand, twenty-one".