2121504533312 has 28 divisors (see below), whose sum is σ = 4210003287876. Its totient is φ = 1060716303360.

The previous prime is 2121504533221. The next prime is 2121504533329. The reversal of 2121504533312 is 2133354051212.

It can be written as a sum of positive squares in 2 ways, for example, as 1772157338176 + 349347195136 = 1331224^2 + 591056^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393262 + ... + 2486802.

Almost surely, 2^{2121504533312} is an apocalyptic number.

It is an amenable number.

2121504533312 is a deficient number, since it is larger than the sum of its proper divisors (2088498754564).

2121504533312 is a wasteful number, since it uses less digits than its factorization.

2121504533312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123866 (or 1123856 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 2121504533312 its reverse (2133354051212), we get a palindrome (4254858584524).

The spelling of 2121504533312 in words is "two trillion, one hundred twenty-one billion, five hundred four million, five hundred thirty-three thousand, three hundred twelve".