212121110030 has 8 divisors (see below), whose sum is σ = 381817998072. Its totient is φ = 84848444008.

The previous prime is 212121109997. The next prime is 212121110083. The reversal of 212121110030 is 30011121212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212121109987 and 212121110014.

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, 10606055492 + ... + 10606055511.

It is an arithmetic number, because the mean of its divisors is an integer number (47727249759).

Almost surely, 2^212121110030 is an apocalyptic number.

212121110030 is a deficient number, since it is larger than the sum of its proper divisors (169696888042).

212121110030 is a wasteful number, since it uses less digits than its factorization.

212121110030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21212111010.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212121110030 its reverse (30011121212), we get a palindrome (242132231242).

The spelling of 212121110030 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, thirty".