20321212110020 has 24 divisors (see below), whose sum is σ = 43666976721984. Its totient is φ = 7939450312416.

The previous prime is 20321212110013. The next prime is 20321212110047. The reversal of 20321212110020 is 2001121212302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11814657344 + ... + 11814659063.

It is an arithmetic number, because the mean of its divisors is an integer number (1819457363416).

Almost surely, 2^{20321212110020} is an apocalyptic number.

20321212110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321212110020 is an abundant number, since it is smaller than the sum of its proper divisors (23345764611964).

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

20321212110020 is a wasteful number, since it uses less digits than its factorization.

20321212110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23629316459 (or 23629316457 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20321212110020 its reverse (2001121212302), we get a palindrome (22322333322322).

The spelling of 20321212110020 in words is "twenty trillion, three hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, twenty".