20101012010120 has 32 divisors (see below), whose sum is σ = 45456857127000. Its totient is φ = 7999590563328.

The previous prime is 20101012010119. The next prime is 20101012010129. The reversal of 20101012010120 is 2101021010102.

It can be written as a sum of positive squares in 4 ways, for example, as 19143827633956 + 957184376164 = 4375366^2 + 978358^2 .

It is not an unprimeable number, because it can be changed into a prime (20101012010129) 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, 1275437045 + ... + 1275452804.

Almost surely, 2^{20101012010120} is an apocalyptic number.

20101012010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101012010120 is an abundant number, since it is smaller than the sum of its proper divisors (25355845116880).

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

20101012010120 is a wasteful number, since it uses less digits than its factorization.

20101012010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550890057 (or 2550890053 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101012010120 its reverse (2101021010102), we get a palindrome (22202033020222).

The spelling of 20101012010120 in words is "twenty trillion, one hundred one billion, twelve million, ten thousand, one hundred twenty".