20011212101120 has 80 divisors (see below), whose sum is σ = 47981094638400. Its totient is φ = 8004303519744.

The previous prime is 20011212101119. The next prime is 20011212101207. The reversal of 20011212101120 is 2110121211002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 20011212101095 and 20011212101104.

It is a congruent number.

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, 214668281 + ... + 214761479.

It is an arithmetic number, because the mean of its divisors is an integer number (599763682980).

Almost surely, 2^{20011212101120} is an apocalyptic number.

20011212101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011212101120 is an abundant number, since it is smaller than the sum of its proper divisors (27969882537280).

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

20011212101120 is an frugal number, since it uses more digits than its factorization.

20011212101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177095 (or 177079 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011212101120 its reverse (2110121211002), we get a palindrome (22121333312122).

The spelling of 20011212101120 in words is "twenty trillion, eleven billion, two hundred twelve million, one hundred one thousand, one hundred twenty".