30121223023 has 4 divisors (see below), whose sum is σ = 30163116960. Its totient is φ = 30079329088.

The previous prime is 30121223021. The next prime is 30121223113. The reversal of 30121223023 is 32032212103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30121223023 - 2¹ = 30121223021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121223021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20945890 + ... + 20947327.

It is an arithmetic number, because the mean of its divisors is an integer number (7540779240).

Almost surely, 2^30121223023 is an apocalyptic number.

30121223023 is a deficient number, since it is larger than the sum of its proper divisors (41893937).

30121223023 is an equidigital number, since it uses as much as digits as its factorization.

30121223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41893936.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30121223023 its reverse (32032212103), we get a palindrome (62153435126).

The spelling of 30121223023 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-three thousand, twenty-three".