20214021331 has 4 divisors (see below), whose sum is σ = 23101738672. Its totient is φ = 17326303992.

The previous prime is 20214021301. The next prime is 20214021361. The reversal of 20214021331 is 13312041202.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20214021301) and next prime (20214021361).

It is a cyclic number.

It is not a de Polignac number, because 20214021331 - 2⁵ = 20214021299 is a prime.

It is a super-2 number, since 2×20214021331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20214021299 and 20214021308.

It is not an unprimeable number, because it can be changed into a prime (20214021301) 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, 1443858660 + ... + 1443858673.

It is an arithmetic number, because the mean of its divisors is an integer number (5775434668).

Almost surely, 2^20214021331 is an apocalyptic number.

20214021331 is a deficient number, since it is larger than the sum of its proper divisors (2887717341).

20214021331 is an equidigital number, since it uses as much as digits as its factorization.

20214021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887717340.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20214021331 its reverse (13312041202), we get a palindrome (33526062533).

The spelling of 20214021331 in words is "twenty billion, two hundred fourteen million, twenty-one thousand, three hundred thirty-one".