20202123231020 has 48 divisors (see below), whose sum is σ = 45383108198400. Its totient is φ = 7527097933824.

The previous prime is 20202123231001. The next prime is 20202123231077. The reversal of 20202123231020 is 2013232120202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20202123230983 and 20202123231001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306245420 + ... + 306311379.

It is an arithmetic number, because the mean of its divisors is an integer number (945481420800).

Almost surely, 2^{20202123231020} is an apocalyptic number.

20202123231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202123231020 is an abundant number, since it is smaller than the sum of its proper divisors (25180984967380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202123231020 is a wasteful number, since it uses less digits than its factorization.

20202123231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612556922 (or 612556920 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20202123231020 its reverse (2013232120202), we get a palindrome (22215355351222).

The spelling of 20202123231020 in words is "twenty trillion, two hundred two billion, one hundred twenty-three million, two hundred thirty-one thousand, twenty".