2121112437246 has 256 divisors, whose sum is σ = 5609749478400. Its totient is φ = 586855526400.

The previous prime is 2121112437233. The next prime is 2121112437247. The reversal of 2121112437246 is 6427342111212.

2121112437246 is a `hidden beast` number, since 2 + 1 + 211 + 1 + 2 + 437 + 2 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2121112437246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121112437247) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 47610001 + ... + 47654531.

It is an arithmetic number, because the mean of its divisors is an integer number (21913083900).

Almost surely, 2^{2121112437246} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121112437246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2804874739200).

2121112437246 is an abundant number, since it is smaller than the sum of its proper divisors (3488637041154).

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

2121112437246 is a wasteful number, since it uses less digits than its factorization.

2121112437246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44712 (or 44706 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

Adding to 2121112437246 its reverse (6427342111212), we get a palindrome (8548454548458).

The spelling of 2121112437246 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, four hundred thirty-seven thousand, two hundred forty-six".