20212111000000 has 98 divisors (see below), whose sum is σ = 50134870452944. Its totient is φ = 8084844000000.

The previous prime is 20212110999929. The next prime is 20212111000001. The reversal of 20212111000000 is 11121202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212111000001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9106056 + ... + 11106055.

Almost surely, 2^{20212111000000} is an apocalyptic number.

20212111000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212111000000 is an abundant number, since it is smaller than the sum of its proper divisors (29922759452944).

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

20212111000000 is an frugal number, since it uses more digits than its factorization.

20212111000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20212153 (or 20212118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20212111000000 its reverse (11121202), we get a palindrome (20212122121202).

The spelling of 20212111000000 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million", and thus it is an aban number.