212202212020 has 24 divisors (see below), whose sum is σ = 471837860424. Its totient is φ = 79887891456.

The previous prime is 212202211981. The next prime is 212202212029. The reversal of 212202212020 is 20212202212.

It can be written as a sum of positive squares in 4 ways, for example, as 19126336804 + 193075875216 = 138298^2 + 439404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212202211985 and 212202212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202212029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312061737 + ... + 312062416.

It is an arithmetic number, because the mean of its divisors is an integer number (19659910851).

Almost surely, 2^212202212020 is an apocalyptic number.

212202212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212202212020 is an abundant number, since it is smaller than the sum of its proper divisors (259635648404).

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

212202212020 is a wasteful number, since it uses less digits than its factorization.

212202212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624124179 (or 624124177 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212202212020 its reverse (20212202212), we get a palindrome (232414414232).

The spelling of 212202212020 in words is "two hundred twelve billion, two hundred two million, two hundred twelve thousand, twenty".