1211033312124 has 12 divisors (see below), whose sum is σ = 2825744394984. Its totient is φ = 403677770704.

The previous prime is 1211033312113. The next prime is 1211033312129. The reversal of 1211033312124 is 4212133301121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1211033312094 and 1211033312103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211033312129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50459721327 + ... + 50459721350.

It is an arithmetic number, because the mean of its divisors is an integer number (235478699582).

Almost surely, 2^{1211033312124} is an apocalyptic number.

It is an amenable number.

1211033312124 is an abundant number, since it is smaller than the sum of its proper divisors (1614711082860).

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

1211033312124 is a wasteful number, since it uses less digits than its factorization.

1211033312124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100919442684 (or 100919442682 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1211033312124 its reverse (4212133301121), we get a palindrome (5423166613245).

The spelling of 1211033312124 in words is "one trillion, two hundred eleven billion, thirty-three million, three hundred twelve thousand, one hundred twenty-four".