212213302020 has 36 divisors (see below), whose sum is σ = 643713683340. Its totient is φ = 56590213824.

The previous prime is 212213302019. The next prime is 212213302043. The reversal of 212213302020 is 20203312212.

It can be written as a sum of positive squares in 2 ways, for example, as 130656223296 + 81557078724 = 361464^2 + 285582^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 212213301984 and 212213302002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589481215 + ... + 589481574.

Almost surely, 2^212213302020 is an apocalyptic number.

212213302020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212213302020 is an abundant number, since it is smaller than the sum of its proper divisors (431500381320).

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

212213302020 is a wasteful number, since it uses less digits than its factorization.

212213302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178962804 (or 1178962799 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212213302020 its reverse (20203312212), we get a palindrome (232416614232).

The spelling of 212213302020 in words is "two hundred twelve billion, two hundred thirteen million, three hundred two thousand, twenty".