20120001002020 has 24 divisors (see below), whose sum is σ = 42441472975104. Its totient is φ = 8011910711136.

The previous prime is 20120001001999. The next prime is 20120001002027. The reversal of 20120001002020 is 2020010002102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20120001001988 and 20120001002006.

It is not an unprimeable number, because it can be changed into a prime (20120001002027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255601034 + ... + 2255609953.

It is an arithmetic number, because the mean of its divisors is an integer number (1768394707296).

Almost surely, 2^{20120001002020} is an apocalyptic number.

20120001002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120001002020 is an abundant number, since it is smaller than the sum of its proper divisors (22321471973084).

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

20120001002020 is a wasteful number, since it uses less digits than its factorization.

20120001002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511211219 (or 4511211217 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20120001002020 its reverse (2020010002102), we get a palindrome (22140011004122).

The spelling of 20120001002020 in words is "twenty trillion, one hundred twenty billion, one million, two thousand, twenty".