210030121421 has 8 divisors (see below), whose sum is σ = 210754125504. Its totient is φ = 209306429920.

The previous prime is 210030121397. The next prime is 210030121513. The reversal of 210030121421 is 124121030012.

210030121421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210030121421 is a prime.

It is a super-2 number, since 2×210030121421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210030121421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030121621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310366 + ... + 1461888.

It is an arithmetic number, because the mean of its divisors is an integer number (26344265688).

Almost surely, 2^210030121421 is an apocalyptic number.

It is an amenable number.

210030121421 is a deficient number, since it is larger than the sum of its proper divisors (724004083).

210030121421 is a wasteful number, since it uses less digits than its factorization.

210030121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156291.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 210030121421 its reverse (124121030012), we get a palindrome (334151151433).

The spelling of 210030121421 in words is "two hundred ten billion, thirty million, one hundred twenty-one thousand, four hundred twenty-one".