11221210212112 has 10 divisors (see below), whose sum is σ = 21741094785998. Its totient is φ = 5610605106048.

The previous prime is 11221210211993. The next prime is 11221210212119. The reversal of 11221210212112 is 21121201212211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11009761065216 + 211449146896 = 3318096^2 + 459836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11221210212112.

It is not an unprimeable number, because it can be changed into a prime (11221210212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350662819113 + ... + 350662819144.

Almost surely, 2^{11221210212112} is an apocalyptic number.

It is an amenable number.

11221210212112 is a deficient number, since it is larger than the sum of its proper divisors (10519884573886).

11221210212112 is an equidigital number, since it uses as much as digits as its factorization.

11221210212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701325638265 (or 701325638259 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11221210212112 its reverse (21121201212211), we get a palindrome (32342411424323).

The spelling of 11221210212112 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, one hundred twelve".