20201020120020 has 48 divisors (see below), whose sum is σ = 56580483193920. Its totient is φ = 5385259950336.

The previous prime is 20201020120003. The next prime is 20201020120037. The reversal of 20201020120020 is 2002102010202.

It is an interprime number because it is at equal distance from previous prime (20201020120003) and next prime (20201020120037).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20201020119978 and 20201020120005.

It is a congruent number.

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, 52266742 + ... + 52651821.

It is an arithmetic number, because the mean of its divisors is an integer number (1178760066540).

Almost surely, 2^{20201020120020} is an apocalyptic number.

20201020120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201020120020 is an abundant number, since it is smaller than the sum of its proper divisors (36379463073900).

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

20201020120020 is a wasteful number, since it uses less digits than its factorization.

20201020120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104921784 (or 104921782 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20201020120020 its reverse (2002102010202), we get a palindrome (22203122130222).

The spelling of 20201020120020 in words is "twenty trillion, two hundred one billion, twenty million, one hundred twenty thousand, twenty".