30121123285 has 8 divisors (see below), whose sum is σ = 39431288736. Its totient is φ = 21906271440.

The previous prime is 30121123237. The next prime is 30121123289. The reversal of 30121123285 is 58232112103.

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

It is not a de Polignac number, because 30121123285 - 2²³ = 30112734677 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 (30121123289) 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, 273828339 + ... + 273828448.

It is an arithmetic number, because the mean of its divisors is an integer number (4928911092).

Almost surely, 2^30121123285 is an apocalyptic number.

It is an amenable number.

30121123285 is a deficient number, since it is larger than the sum of its proper divisors (9310165451).

30121123285 is a wasteful number, since it uses less digits than its factorization.

30121123285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547656803.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 30121123285 its reverse (58232112103), we get a palindrome (88353235388).

The spelling of 30121123285 in words is "thirty billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred eighty-five".