20012110121020 has 48 divisors (see below), whose sum is σ = 42047994612960. Its totient is φ = 8000547058944.

The previous prime is 20012110120969. The next prime is 20012110121023. The reversal of 20012110121020 is 2012101121002.

It is a super-2 number, since 2×20012110121020² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012110121023) 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, 570632046 + ... + 570667114.

It is an arithmetic number, because the mean of its divisors is an integer number (875999887770).

Almost surely, 2^{20012110121020} is an apocalyptic number.

20012110121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012110121020 is an abundant number, since it is smaller than the sum of its proper divisors (22035884491940).

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

20012110121020 is a wasteful number, since it uses less digits than its factorization.

20012110121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49582 (or 49580 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012110121020 its reverse (2012101121002), we get a palindrome (22024211242022).

The spelling of 20012110121020 in words is "twenty trillion, twelve billion, one hundred ten million, one hundred twenty-one thousand, twenty".