1211111311124 has 48 divisors (see below), whose sum is σ = 2490191995200. Its totient is φ = 508114736640.

The previous prime is 1211111311103. The next prime is 1211111311133. The reversal of 1211111311124 is 4211131111121.

It is a super-3 number, since 3×1211111311124³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1211111311096 and 1211111311105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7026527 + ... + 7196825.

It is an arithmetic number, because the mean of its divisors is an integer number (51878999900).

Almost surely, 2^{1211111311124} is an apocalyptic number.

It is an amenable number.

1211111311124 is an abundant number, since it is smaller than the sum of its proper divisors (1279080684076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211111311124 is a wasteful number, since it uses less digits than its factorization.

1211111311124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182760 (or 182758 counting only the distinct ones).

The product of its digits is 48, while the sum is 20.

Adding to 1211111311124 its reverse (4211131111121), we get a palindrome (5422242422245).

The spelling of 1211111311124 in words is "one trillion, two hundred eleven billion, one hundred eleven million, three hundred eleven thousand, one hundred twenty-four".