212011220020 has 12 divisors (see below), whose sum is σ = 445223562084. Its totient is φ = 84804488000.

The previous prime is 212011220017. The next prime is 212011220041. The reversal of 212011220020 is 20022110212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66421660176 + 145589559844 = 257724^2 + 381562^2 .

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, 5300280481 + ... + 5300280520.

It is an arithmetic number, because the mean of its divisors is an integer number (37101963507).

Almost surely, 2^212011220020 is an apocalyptic number.

212011220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011220020 is an abundant number, since it is smaller than the sum of its proper divisors (233212342064).

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

212011220020 is a wasteful number, since it uses less digits than its factorization.

212011220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600561010 (or 10600561008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212011220020 its reverse (20022110212), we get a palindrome (232033330232).

The spelling of 212011220020 in words is "two hundred twelve billion, eleven million, two hundred twenty thousand, twenty".