212011020000020 has 48 divisors (see below), whose sum is σ = 445566607920000. Its totient is φ = 84738997741440.

The previous prime is 212011019999971. The next prime is 212011020000089. The reversal of 212011020000020 is 20000020110212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212011019999956 and 212011020000010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291011810 + ... + 291739430.

It is an arithmetic number, because the mean of its divisors is an integer number (9282637665000).

Almost surely, 2^{212011020000020} is an apocalyptic number.

212011020000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011020000020 is an abundant number, since it is smaller than the sum of its proper divisors (233555587919980).

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

212011020000020 is a wasteful number, since it uses less digits than its factorization.

212011020000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738848 (or 738846 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212011020000020 its reverse (20000020110212), we get a palindrome (232011040110232).

The spelling of 212011020000020 in words is "two hundred twelve trillion, eleven billion, twenty million, twenty", and thus it is an aban number.