212020021021122 has 96 divisors (see below), whose sum is σ = 465732684419184. Its totient is φ = 69701119488000.

The previous prime is 212020021021111. The next prime is 212020021021177. The reversal of 212020021021122 is 221120120020212.

It is a happy number.

212020021021122 is a `hidden beast` number, since 2 + 1 + 20 + 200 + 210 + 211 + 22 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 208048573884321 + 3971447136801 = 14423889^2 + 1992849^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212020021021095 and 212020021021104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1551407418 + ... + 1551544074.

Almost surely, 2^{212020021021122} is an apocalyptic number.

212020021021122 is an abundant number, since it is smaller than the sum of its proper divisors (253712663398062).

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

212020021021122 is a wasteful number, since it uses less digits than its factorization.

212020021021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140084 (or 140081 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212020021021122 its reverse (221120120020212), we get a palindrome (433140141041334).

The spelling of 212020021021122 in words is "two hundred twelve trillion, twenty billion, twenty-one million, twenty-one thousand, one hundred twenty-two".