20330221230020 has 48 divisors (see below), whose sum is σ = 47563010958960. Its totient is φ = 7247696902656.

The previous prime is 20330221230019. The next prime is 20330221230029. The reversal of 20330221230020 is 2003212203302.

It can be written as a sum of positive squares in 8 ways, for example, as 5450254438084 + 14879966791936 = 2334578^2 + 3857456^2 .

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 = 20330221229974 and 20330221230001.

It is not an unprimeable number, because it can be changed into a prime (20330221230029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1348150367 + ... + 1348165446.

It is an arithmetic number, because the mean of its divisors is an integer number (990896061645).

Almost surely, 2^{20330221230020} is an apocalyptic number.

20330221230020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330221230020 is an abundant number, since it is smaller than the sum of its proper divisors (27232789728940).

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

20330221230020 is a wasteful number, since it uses less digits than its factorization.

20330221230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696315864 (or 2696315862 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20330221230020 its reverse (2003212203302), we get a palindrome (22333433433322).

The spelling of 20330221230020 in words is "twenty trillion, three hundred thirty billion, two hundred twenty-one million, two hundred thirty thousand, twenty".