30102123421 has 4 divisors (see below), whose sum is σ = 30318685600. Its totient is φ = 29885561244.

The previous prime is 30102123419. The next prime is 30102123433. The reversal of 30102123421 is 12432120103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30102123421 - 2¹ = 30102123419 is a prime.

It is a super-2 number, since 2×30102123421² (a number of 22 digits) contains 22 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 (30102123451) 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 3 ways as a sum of consecutive naturals, for example, 108280881 + ... + 108281158.

It is an arithmetic number, because the mean of its divisors is an integer number (7579671400).

Almost surely, 2^30102123421 is an apocalyptic number.

It is an amenable number.

30102123421 is a deficient number, since it is larger than the sum of its proper divisors (216562179).

30102123421 is a wasteful number, since it uses less digits than its factorization.

30102123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216562178.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30102123421 its reverse (12432120103), we get a palindrome (42534243524).

The spelling of 30102123421 in words is "thirty billion, one hundred two million, one hundred twenty-three thousand, four hundred twenty-one".