11021481 has 8 divisors (see below), whose sum is σ = 16328160. Its totient is φ = 7347636.

The previous prime is 11021473. The next prime is 11021489. The reversal of 11021481 is 18412011.

It is an interprime number because it is at equal distance from previous prime (11021473) and next prime (11021489).

It is not a de Polignac number, because 11021481 - 2³ = 11021473 is a prime.

It is a super-2 number, since 2×11021481² = 242946086866722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11021489) 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, 204075 + ... + 204128.

It is an arithmetic number, because the mean of its divisors is an integer number (2041020).

Almost surely, 2^11021481 is an apocalyptic number.

It is an amenable number.

11021481 is a deficient number, since it is larger than the sum of its proper divisors (5306679).

11021481 is an equidigital number, since it uses as much as digits as its factorization.

11021481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408212 (or 408206 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11021481 is about 3319.8615935005. The cubic root of 11021481 is about 222.5426825493.

Adding to 11021481 its reverse (18412011), we get a palindrome (29433492).

The spelling of 11021481 in words is "eleven million, twenty-one thousand, four hundred eighty-one".