4020021234011 has 4 divisors (see below), whose sum is σ = 4020096208392. Its totient is φ = 4019946259632.

The previous prime is 4020021233941. The next prime is 4020021234037. The reversal of 4020021234011 is 1104321200204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020021234011 is a prime.

It is a super-3 number, since 3×4020021234011³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020021234041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37406705 + ... + 37514018.

It is an arithmetic number, because the mean of its divisors is an integer number (1005024052098).

Almost surely, 2^{4020021234011} is an apocalyptic number.

4020021234011 is a deficient number, since it is larger than the sum of its proper divisors (74974381).

4020021234011 is an equidigital number, since it uses as much as digits as its factorization.

4020021234011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74974380.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 4020021234011 its reverse (1104321200204), we get a palindrome (5124342434215).

The spelling of 4020021234011 in words is "four trillion, twenty billion, twenty-one million, two hundred thirty-four thousand, eleven".