212121000002 has 32 divisors (see below), whose sum is σ = 356926003200. Its totient is φ = 94064837328.

The previous prime is 212120999929. The next prime is 212121000029. The reversal of 212121000002 is 200000121212.

It is a happy number.

It is a super-3 number, since 3×212121000002³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2540852 + ... + 2623007.

It is an arithmetic number, because the mean of its divisors is an integer number (11153937600).

Almost surely, 2^212121000002 is an apocalyptic number.

212121000002 is a deficient number, since it is larger than the sum of its proper divisors (144805003198).

212121000002 is a wasteful number, since it uses less digits than its factorization.

212121000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163950.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212121000002 its reverse (200000121212), we get a palindrome (412121121214).

The spelling of 212121000002 in words is "two hundred twelve billion, one hundred twenty-one million, two", and thus it is an aban number.