30121223022 has 24 divisors (see below), whose sum is σ = 71195618520. Its totient is φ = 9127643280.

The previous prime is 30121223021. The next prime is 30121223113. The reversal of 30121223022 is 22032212103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30121222986 and 30121223004.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76063497 + ... + 76063892.

It is an arithmetic number, because the mean of its divisors is an integer number (2966484105).

Almost surely, 2^30121223022 is an apocalyptic number.

30121223022 is an abundant number, since it is smaller than the sum of its proper divisors (41074395498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121223022 is a wasteful number, since it uses less digits than its factorization.

30121223022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152127408 (or 152127405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30121223022 its reverse (22032212103), we get a palindrome (52153435125).

The spelling of 30121223022 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-three thousand, twenty-two".