212121002022 has 8 divisors (see below), whose sum is σ = 424242004056. Its totient is φ = 70707000672.

The previous prime is 212121002011. The next prime is 212121002033. The reversal of 212121002022 is 220200121212.

It is an interprime number because it is at equal distance from previous prime (212121002011) and next prime (212121002033).

It is a sphenic number, since it is the product of 3 distinct primes.

212121002022 is an admirable number.

It is a super-3 number, since 3×212121002022³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212121001992 and 212121002010.

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, 17676750163 + ... + 17676750174.

It is an arithmetic number, because the mean of its divisors is an integer number (53030250507).

Almost surely, 2^212121002022 is an apocalyptic number.

212121002022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212121002022 is a wasteful number, since it uses less digits than its factorization.

212121002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35353500342.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212121002022 its reverse (220200121212), we get a palindrome (432321123234).

The spelling of 212121002022 in words is "two hundred twelve billion, one hundred twenty-one million, two thousand, twenty-two".