11221012 has 12 divisors (see below), whose sum is σ = 21422016. Its totient is φ = 5100440.

The previous prime is 11221009. The next prime is 11221043. The reversal of 11221012 is 21012211.

It is a super-2 number, since 2×11221012² = 251822220608288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127468 + ... + 127555.

It is an arithmetic number, because the mean of its divisors is an integer number (1785168).

Almost surely, 2^11221012 is an apocalyptic number.

It is an amenable number.

11221012 is a deficient number, since it is larger than the sum of its proper divisors (10201004).

11221012 is a wasteful number, since it uses less digits than its factorization.

11221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255038 (or 255036 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 11221012 is about 3349.7779030855. Note that the first 3 decimals coincide. The cubic root of 11221012 is about 223.8776170340.

Adding to 11221012 its reverse (21012211), we get a palindrome (32233223).

The spelling of 11221012 in words is "eleven million, two hundred twenty-one thousand, twelve".