212012111120020 has 12 divisors (see below), whose sum is σ = 445225433352084. Its totient is φ = 84804844448000.

The previous prime is 212012111119993. The next prime is 212012111120039. The reversal of 212012111120020 is 20021111210212.

It can be written as a sum of positive squares in 2 ways, for example, as 32175804106384 + 179836307013636 = 5672372^2 + 13410306^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212012111119976 and 212012111120003.

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, 5300302777981 + ... + 5300302778020.

It is an arithmetic number, because the mean of its divisors is an integer number (37102119446007).

Almost surely, 2^{212012111120020} is an apocalyptic number.

212012111120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012111120020 is an abundant number, since it is smaller than the sum of its proper divisors (233213322232064).

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

212012111120020 is a wasteful number, since it uses less digits than its factorization.

212012111120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600605556010 (or 10600605556008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212012111120020 its reverse (20021111210212), we get a palindrome (232033222330232).

The spelling of 212012111120020 in words is "two hundred twelve trillion, twelve billion, one hundred eleven million, one hundred twenty thousand, twenty".