2111211112020 has 24 divisors (see below), whose sum is σ = 5911391113824. Its totient is φ = 562989629856.

The previous prime is 2111211112009. The next prime is 2111211112057. The reversal of 2111211112020 is 202111121112.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17593425874 + ... + 17593425993.

It is an arithmetic number, because the mean of its divisors is an integer number (246307963076).

Almost surely, 2^{2111211112020} is an apocalyptic number.

2111211112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111211112020 is an abundant number, since it is smaller than the sum of its proper divisors (3800180001804).

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

2111211112020 is a wasteful number, since it uses less digits than its factorization.

2111211112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35186851879 (or 35186851877 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111211112020 its reverse (202111121112), we get a palindrome (2313322233132).

The spelling of 2111211112020 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred twelve thousand, twenty".