212012111020 has 12 divisors (see below), whose sum is σ = 445225433184. Its totient is φ = 84804844400.

The previous prime is 212012110967. The next prime is 212012111053. The reversal of 212012111020 is 20111210212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300302756 + ... + 5300302795.

It is an arithmetic number, because the mean of its divisors is an integer number (37102119432).

Almost surely, 2^212012111020 is an apocalyptic number.

212012111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012111020 is an abundant number, since it is smaller than the sum of its proper divisors (233213322164).

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

212012111020 is a wasteful number, since it uses less digits than its factorization.

212012111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600605560 (or 10600605558 counting only the distinct ones).

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

Adding to 212012111020 its reverse (20111210212), we get a palindrome (232123321232).

The spelling of 212012111020 in words is "two hundred twelve billion, twelve million, one hundred eleven thousand, twenty".