210030323021 has 8 divisors (see below), whose sum is σ = 210358197504. Its totient is φ = 209702682640.

The previous prime is 210030323003. The next prime is 210030323093. The reversal of 210030323021 is 120323030012.

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 210030323021 - 2¹⁴ = 210030306637 is a prime.

It is a super-3 number, since 3×210030323021³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030323221) 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, 1782095 + ... + 1896291.

It is an arithmetic number, because the mean of its divisors is an integer number (26294774688).

Almost surely, 2^210030323021 is an apocalyptic number.

It is an amenable number.

210030323021 is a deficient number, since it is larger than the sum of its proper divisors (327874483).

210030323021 is a wasteful number, since it uses less digits than its factorization.

210030323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117051.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 210030323021 its reverse (120323030012), we get a palindrome (330353353033).

The spelling of 210030323021 in words is "two hundred ten billion, thirty million, three hundred twenty-three thousand, twenty-one".