210921824044 has 12 divisors (see below), whose sum is σ = 369341191800. Its totient is φ = 105395769248.

The previous prime is 210921824011. The next prime is 210921824051. The reversal of 210921824044 is 440428129012.

It is a junction number, because it is equal to n+sod(n) for n = 210921823994 and 210921824012.

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, 16278409 + ... + 16291360.

It is an arithmetic number, because the mean of its divisors is an integer number (30778432650).

Almost surely, 2^210921824044 is an apocalyptic number.

It is an amenable number.

210921824044 is a deficient number, since it is larger than the sum of its proper divisors (158419367756).

210921824044 is a wasteful number, since it uses less digits than its factorization.

210921824044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32571392 (or 32571390 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 210921824044 in words is "two hundred ten billion, nine hundred twenty-one million, eight hundred twenty-four thousand, forty-four".