30120121106 has 4 divisors (see below), whose sum is σ = 45180181662. Its totient is φ = 15060060552.

The previous prime is 30120121067. The next prime is 30120121117. The reversal of 30120121106 is 60112102103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60112102103 = 29 ⋅2072831107.

It can be written as a sum of positive squares in only one way, i.e., 17886655081 + 12233466025 = 133741^2 + 110605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7530030275 + ... + 7530030278.

Almost surely, 2^30120121106 is an apocalyptic number.

30120121106 is a deficient number, since it is larger than the sum of its proper divisors (15060060556).

30120121106 is a wasteful number, since it uses less digits than its factorization.

30120121106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060060555.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30120121106 its reverse (60112102103), we get a palindrome (90232223209).

The spelling of 30120121106 in words is "thirty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred six".