212121003301 has 8 divisors (see below), whose sum is σ = 214020925560. Its totient is φ = 210228028608.

The previous prime is 212121003277. The next prime is 212121003313. The reversal of 212121003301 is 103300121212.

It can be written as a sum of positive squares in 4 ways, for example, as 10470610276 + 201650393025 = 102326^2 + 449055^2 .

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 212121003301 - 2²¹ = 212118906149 is a prime.

It is a super-3 number, since 3×212121003301³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121004301) 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, 1675546 + ... + 1797691.

It is an arithmetic number, because the mean of its divisors is an integer number (26752615695).

Almost surely, 2^212121003301 is an apocalyptic number.

It is an amenable number.

212121003301 is a deficient number, since it is larger than the sum of its proper divisors (1899922259).

212121003301 is a wasteful number, since it uses less digits than its factorization.

212121003301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473783.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212121003301 its reverse (103300121212), we get a palindrome (315421124513).

The spelling of 212121003301 in words is "two hundred twelve billion, one hundred twenty-one million, three thousand, three hundred one".