11111121110212 has 6 divisors (see below), whose sum is σ = 19444461942878. Its totient is φ = 5555560555104.

The previous prime is 11111121110183. The next prime is 11111121110227. The reversal of 11111121110212 is 21201112111111.

It can be written as a sum of positive squares in only one way, i.e., 5585687920836 + 5525433189376 = 2363406^2 + 2350624^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388890138773 + ... + 1388890138780.

Almost surely, 2^{11111121110212} is an apocalyptic number.

It is an amenable number.

11111121110212 is a deficient number, since it is larger than the sum of its proper divisors (8333340832666).

11111121110212 is a wasteful number, since it uses less digits than its factorization.

11111121110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777780277557 (or 2777780277555 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111121110212 its reverse (21201112111111), we get a palindrome (32312233221323).

The spelling of 11111121110212 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, two hundred twelve".