11111212202012 has 24 divisors (see below), whose sum is σ = 21046657728096. Its totient is φ = 5102220045888.

The previous prime is 11111212201951. The next prime is 11111212202021. The reversal of 11111212202012 is 21020221211111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542317568 + ... + 542338055.

It is an arithmetic number, because the mean of its divisors is an integer number (876944072004).

Almost surely, 2^{11111212202012} is an apocalyptic number.

It is an amenable number.

11111212202012 is a deficient number, since it is larger than the sum of its proper divisors (9935445526084).

11111212202012 is a wasteful number, since it uses less digits than its factorization.

11111212202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084655837 (or 1084655835 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11111212202012 its reverse (21020221211111), we get a palindrome (32131433413123).

Subtracting 11111212202012 from its reverse (21020221211111), we obtain a palindrome (9909009009099).

It can be divided in two parts, 1111121 and 2202012, that added together give a palindrome (3313133).

The spelling of 11111212202012 in words is "eleven trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, twelve".