212121030001 has 8 divisors (see below), whose sum is σ = 219023311104. Its totient is φ = 205222478160.

The previous prime is 212121029969. The next prime is 212121030013. The reversal of 212121030001 is 100030121212.

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

It is a cyclic number.

It is not a de Polignac number, because 212121030001 - 2⁵ = 212121029969 is a prime.

It is a super-3 number, since 3×212121030001³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212121010001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816475 + ... + 1044448.

It is an arithmetic number, because the mean of its divisors is an integer number (27377913888).

Almost surely, 2^212121030001 is an apocalyptic number.

It is an amenable number.

212121030001 is a deficient number, since it is larger than the sum of its proper divisors (6902281103).

212121030001 is a wasteful number, since it uses less digits than its factorization.

212121030001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864631.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 212121030001 its reverse (100030121212), we get a palindrome (312151151213).

The spelling of 212121030001 in words is "two hundred twelve billion, one hundred twenty-one million, thirty thousand, one".