20381121327 has 32 divisors (see below), whose sum is σ = 31820014080. Its totient is φ = 11362665600.

The previous prime is 20381121287. The next prime is 20381121367. The reversal of 20381121327 is 72312118302.

It is an interprime number because it is at equal distance from previous prime (20381121287) and next prime (20381121367).

It is not a de Polignac number, because 20381121327 - 2⁷ = 20381121199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20381121294 and 20381121303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20381121367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148077 + ... + 250377.

It is an arithmetic number, because the mean of its divisors is an integer number (994375440).

Almost surely, 2^20381121327 is an apocalyptic number.

20381121327 is a deficient number, since it is larger than the sum of its proper divisors (11438892753).

20381121327 is a wasteful number, since it uses less digits than its factorization.

20381121327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102543.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 20381121327 its reverse (72312118302), we get a palindrome (92693239629).

The spelling of 20381121327 in words is "twenty billion, three hundred eighty-one million, one hundred twenty-one thousand, three hundred twenty-seven".