20020134221031 has 8 divisors (see below), whose sum is σ = 30506871193984. Its totient is φ = 11440076697720.

The previous prime is 20020134221023. The next prime is 20020134221041. The reversal of 20020134221031 is 13012243102002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20020134221031 - 2³ = 20020134221023 is a prime.

It is a super-2 number, since 2×20020134221031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 953339724811 = 20020134221031 / (2 + 0 + 0 + 2 + 0 + 1 + 3 + 4 + 2 + 2 + 1 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020134220989 and 20020134221007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020134221041) 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, 476669862385 + ... + 476669862426.

It is an arithmetic number, because the mean of its divisors is an integer number (3813358899248).

Almost surely, 2^{20020134221031} is an apocalyptic number.

20020134221031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20020134221031 is a deficient number, since it is larger than the sum of its proper divisors (10486736972953).

20020134221031 is an equidigital number, since it uses as much as digits as its factorization.

20020134221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953339724821.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20020134221031 its reverse (13012243102002), we get a palindrome (33032377323033).

The spelling of 20020134221031 in words is "twenty trillion, twenty billion, one hundred thirty-four million, two hundred twenty-one thousand, thirty-one".