11312212 has 6 divisors (see below), whose sum is σ = 19796378. Its totient is φ = 5656104.

The previous prime is 11312209. The next prime is 11312221. The reversal of 11312212 is 21221311.

It can be written as a sum of positive squares in only one way, i.e., 9709456 + 1602756 = 3116^2 + 1266^2 .

It is a super-2 number, since 2×11312212² = 255932280665888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11312192 and 11312201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414023 + ... + 1414030.

Almost surely, 2^11312212 is an apocalyptic number.

It is an amenable number.

11312212 is a deficient number, since it is larger than the sum of its proper divisors (8484166).

11312212 is a wasteful number, since it uses less digits than its factorization.

11312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828057 (or 2828055 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 11312212 is about 3363.3631977531. The cubic root of 11312212 is about 224.4825111252.

Adding to 11312212 its reverse (21221311), we get a palindrome (32533523).

Subtracting 11312212 from its reverse (21221311), we obtain a palindrome (9909099).

The spelling of 11312212 in words is "eleven million, three hundred twelve thousand, two hundred twelve".