21120240040003 has 8 divisors (see below), whose sum is σ = 22745029115088. Its totient is φ = 19495473140064.

The previous prime is 21120240039991. The next prime is 21120240040057. The reversal of 21120240040003 is 30004004202112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21120240040003 - 2²¹ = 21120237942851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120240040703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3538801 + ... + 7400242.

It is an arithmetic number, because the mean of its divisors is an integer number (2843128639386).

Almost surely, 2^{21120240040003} is an apocalyptic number.

21120240040003 is a deficient number, since it is larger than the sum of its proper divisors (1624789075085).

21120240040003 is a wasteful number, since it uses less digits than its factorization.

21120240040003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11087573.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21120240040003 its reverse (30004004202112), we get a palindrome (51124244242115).

The spelling of 21120240040003 in words is "twenty-one trillion, one hundred twenty billion, two hundred forty million, forty thousand, three".