212111000120020 has 12 divisors (see below), whose sum is σ = 445433100252084. Its totient is φ = 84844400048000.

The previous prime is 212111000119913. The next prime is 212111000120039. The reversal of 212111000120020 is 20021000111212.

It can be written as a sum of positive squares in 2 ways, for example, as 158066800741444 + 54044199378576 = 12572462^2 + 7351476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302775002981 + ... + 5302775003020.

It is an arithmetic number, because the mean of its divisors is an integer number (37119425021007).

Almost surely, 2^{212111000120020} is an apocalyptic number.

212111000120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111000120020 is an abundant number, since it is smaller than the sum of its proper divisors (233322100132064).

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

212111000120020 is a wasteful number, since it uses less digits than its factorization.

212111000120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605550006010 (or 10605550006008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212111000120020 its reverse (20021000111212), we get a palindrome (232132000231232).

The spelling of 212111000120020 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twenty thousand, twenty".