11021247 has 12 divisors (see below), whose sum is σ = 16468920. Its totient is φ = 7093968.

The previous prime is 11021183. The next prime is 11021249. The reversal of 11021247 is 74212011.

It is not a de Polignac number, because 11021247 - 2⁶ = 11021183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021249) 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, 20853 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (1372410).

Almost surely, 2^11021247 is an apocalyptic number.

11021247 is a deficient number, since it is larger than the sum of its proper divisors (5447673).

11021247 is a wasteful number, since it uses less digits than its factorization.

11021247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42262 (or 42259 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 11021247 is about 3319.8263508804. The cubic root of 11021247 is about 222.5411075838.

Adding to 11021247 its reverse (74212011), we get a palindrome (85233258).

The spelling of 11021247 in words is "eleven million, twenty-one thousand, two hundred forty-seven".