120030121123 has 4 divisors (see below), whose sum is σ = 130941950328. Its totient is φ = 109118291920.

The previous prime is 120030121111. The next prime is 120030121139. The reversal of 120030121123 is 321121030021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321121030021 = 11 ⋅29192820911.

It is not a de Polignac number, because 120030121123 - 2¹⁷ = 120029990051 is a prime.

It is a super-2 number, since 2×120030121123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120030121097 and 120030121106.

It is not an unprimeable number, because it can be changed into a prime (120030121223) 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, 5455914586 + ... + 5455914607.

It is an arithmetic number, because the mean of its divisors is an integer number (32735487582).

Almost surely, 2^120030121123 is an apocalyptic number.

120030121123 is a deficient number, since it is larger than the sum of its proper divisors (10911829205).

120030121123 is a wasteful number, since it uses less digits than its factorization.

120030121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10911829204.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 120030121123 its reverse (321121030021), we get a palindrome (441151151144).

The spelling of 120030121123 in words is "one hundred twenty billion, thirty million, one hundred twenty-one thousand, one hundred twenty-three".