4040021213321 has 16 divisors (see below), whose sum is σ = 4126470337920. Its totient is φ = 3954201114240.

The previous prime is 4040021213317. The next prime is 4040021213353. The reversal of 4040021213321 is 1233121200404.

It is a cyclic number.

It is not a de Polignac number, because 4040021213321 - 2² = 4040021213317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040021213821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15624116 + ... + 15880586.

It is an arithmetic number, because the mean of its divisors is an integer number (257904396120).

Almost surely, 2^{4040021213321} is an apocalyptic number.

It is an amenable number.

4040021213321 is a deficient number, since it is larger than the sum of its proper divisors (86449124599).

4040021213321 is a wasteful number, since it uses less digits than its factorization.

4040021213321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257696.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 4040021213321 its reverse (1233121200404), we get a palindrome (5273142413725).

The spelling of 4040021213321 in words is "four trillion, forty billion, twenty-one million, two hundred thirteen thousand, three hundred twenty-one".