11355021 has 12 divisors (see below), whose sum is σ = 16931200. Its totient is φ = 7325640.

The previous prime is 11355011. The next prime is 11355023. The reversal of 11355021 is 12055311.

11355021 is a `hidden beast` number, since 113 + 550 + 2 + 1 = 666.

11355021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11355021 - 2⁶ = 11354957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11354985 and 11355003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20071 + ... + 20628.

Almost surely, 2^11355021 is an apocalyptic number.

It is an amenable number.

11355021 is a deficient number, since it is larger than the sum of its proper divisors (5576179).

11355021 is a wasteful number, since it uses less digits than its factorization.

11355021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40736 (or 40733 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 11355021 is about 3369.7212050851. The cubic root of 11355021 is about 224.7653256909.

The spelling of 11355021 in words is "eleven million, three hundred fifty-five thousand, twenty-one".