212121000022 has 8 divisors (see below), whose sum is σ = 318240232200. Its totient is φ = 106040922624.

The previous prime is 212120999929. The next prime is 212121000029. The reversal of 212121000022 is 220000121212.

It is a happy number.

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

It is a super-3 number, since 3×212121000022³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212120999966 and 212121000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121000029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9775147 + ... + 9796822.

It is an arithmetic number, because the mean of its divisors is an integer number (39780029025).

Almost surely, 2^212121000022 is an apocalyptic number.

212121000022 is a deficient number, since it is larger than the sum of its proper divisors (106119232178).

212121000022 is a wasteful number, since it uses less digits than its factorization.

212121000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19577390.

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

Adding to 212121000022 its reverse (220000121212), we get a palindrome (432121121234).

The spelling of 212121000022 in words is "two hundred twelve billion, one hundred twenty-one million, twenty-two", and thus it is an aban number.