20011212302100 has 72 divisors (see below), whose sum is σ = 57904347947040. Its totient is φ = 5335840298880.

The previous prime is 20011212302099. The next prime is 20011212302131. The reversal of 20011212302100 is 120321211002.

It is a super-3 number, since 3×20011212302100³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20011212302100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307599 + ... + 6333801.

It is an arithmetic number, because the mean of its divisors is an integer number (804227054820).

Almost surely, 2^{20011212302100} is an apocalyptic number.

20011212302100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011212302100 is an abundant number, since it is smaller than the sum of its proper divisors (37893135644940).

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

20011212302100 is a wasteful number, since it uses less digits than its factorization.

20011212302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037289 (or 6037282 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20011212302100 its reverse (120321211002), we get a palindrome (20131533513102).

The spelling of 20011212302100 in words is "twenty trillion, eleven billion, two hundred twelve million, three hundred two thousand, one hundred".