11222012012212 has 6 divisors (see below), whose sum is σ = 19638521021378. Its totient is φ = 5611006006104.

The previous prime is 11222012012209. The next prime is 11222012012213. The reversal of 11222012012212 is 21221021022211.

It can be written as a sum of positive squares in only one way, i.e., 11116129455396 + 105882556816 = 3334086^2 + 325396^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11222012012212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222012012213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402751501523 + ... + 1402751501530.

Almost surely, 2^{11222012012212} is an apocalyptic number.

It is an amenable number.

11222012012212 is a deficient number, since it is larger than the sum of its proper divisors (8416509009166).

11222012012212 is a wasteful number, since it uses less digits than its factorization.

11222012012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805503003057 (or 2805503003055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222012012212 its reverse (21221021022211), we get a palindrome (32443033034423).

Subtracting 11222012012212 from its reverse (21221021022211), we obtain a palindrome (9999009009999).

The spelling of 11222012012212 in words is "eleven trillion, two hundred twenty-two billion, twelve million, twelve thousand, two hundred twelve".