2112350453521 has 24 divisors (see below), whose sum is σ = 2821692641760. Its totient is φ = 1559356444800.

The previous prime is 2112350453441. The next prime is 2112350453573. The reversal of 2112350453521 is 1253540532112.

It is not a de Polignac number, because 2112350453521 - 2¹¹ = 2112350451473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2112350453581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103121800 + ... + 103142281.

It is an arithmetic number, because the mean of its divisors is an integer number (117570526740).

Almost surely, 2^{2112350453521} is an apocalyptic number.

It is an amenable number.

2112350453521 is a deficient number, since it is larger than the sum of its proper divisors (709342188239).

2112350453521 is a wasteful number, since it uses less digits than its factorization.

2112350453521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206264125 (or 206264118 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 2112350453521 its reverse (1253540532112), we get a palindrome (3365890985633).

The spelling of 2112350453521 in words is "two trillion, one hundred twelve billion, three hundred fifty million, four hundred fifty-three thousand, five hundred twenty-one".