30121203112 has 64 divisors (see below), whose sum is σ = 75829622400. Its totient is φ = 10832797440.

The previous prime is 30121203107. The next prime is 30121203149. The reversal of 30121203112 is 21130212103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872687 + ... + 1888702.

It is an arithmetic number, because the mean of its divisors is an integer number (1184837850).

Almost surely, 2^30121203112 is an apocalyptic number.

It is an amenable number.

30121203112 is an abundant number, since it is smaller than the sum of its proper divisors (45708419288).

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

30121203112 is a wasteful number, since it uses less digits than its factorization.

30121203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761426 (or 3761422 counting only the distinct ones).

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

Adding to 30121203112 its reverse (21130212103), we get a palindrome (51251415215).

The spelling of 30121203112 in words is "thirty billion, one hundred twenty-one million, two hundred three thousand, one hundred twelve".