11101222220212 has 6 divisors (see below), whose sum is σ = 19427138885378. Its totient is φ = 5550611110104.

The previous prime is 11101222220191. The next prime is 11101222220213. The reversal of 11101222220212 is 21202222210111.

It can be written as a sum of positive squares in only one way, i.e., 10734233426596 + 366988793616 = 3276314^2 + 605796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11101222220212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101222220213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387652777523 + ... + 1387652777530.

Almost surely, 2^{11101222220212} is an apocalyptic number.

It is an amenable number.

11101222220212 is a deficient number, since it is larger than the sum of its proper divisors (8325916665166).

11101222220212 is a wasteful number, since it uses less digits than its factorization.

11101222220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775305555057 (or 2775305555055 counting only the distinct ones).

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

Adding to 11101222220212 its reverse (21202222210111), we get a palindrome (32303444430323).

The spelling of 11101222220212 in words is "eleven trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".