20321203022120 has 128 divisors (see below), whose sum is σ = 61389928131840. Its totient is φ = 5846659799040.

The previous prime is 20321203022047. The next prime is 20321203022171. The reversal of 20321203022120 is 2122030212302.

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 = 20321203022092 and 20321203022101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253721237 + ... + 253801316.

It is an arithmetic number, because the mean of its divisors is an integer number (479608813530).

Almost surely, 2^{20321203022120} is an apocalyptic number.

20321203022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321203022120 is an abundant number, since it is smaller than the sum of its proper divisors (41068725109720).

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

20321203022120 is a wasteful number, since it uses less digits than its factorization.

20321203022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507522595 (or 507522591 counting only the distinct ones).

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

Adding to 20321203022120 its reverse (2122030212302), we get a palindrome (22443233234422).

The spelling of 20321203022120 in words is "twenty trillion, three hundred twenty-one billion, two hundred three million, twenty-two thousand, one hundred twenty".