20004221013431 has 8 divisors (see below), whose sum is σ = 22295726207280. Its totient is φ = 17836580965248.

The previous prime is 20004221013419. The next prime is 20004221013443. The reversal of 20004221013431 is 13431012240002.

It is an interprime number because it is at equal distance from previous prime (20004221013419) and next prime (20004221013443).

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 20004221013431 - 2²² = 20004216819127 is a prime.

It is a super-2 number, since 2×20004221013431² (a number of 27 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 = 20004221013397 and 20004221013406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004221013401) 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, 30966286076 + ... + 30966286721.

It is an arithmetic number, because the mean of its divisors is an integer number (2786965775910).

Almost surely, 2^{20004221013431} is an apocalyptic number.

20004221013431 is a deficient number, since it is larger than the sum of its proper divisors (2291505193849).

20004221013431 is a wasteful number, since it uses less digits than its factorization.

20004221013431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61932572833.

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

Adding to 20004221013431 its reverse (13431012240002), we get a palindrome (33435233253433).

The spelling of 20004221013431 in words is "twenty trillion, four billion, two hundred twenty-one million, thirteen thousand, four hundred thirty-one".