30030112123221 has 32 divisors (see below), whose sum is σ = 45790411202560. Its totient is φ = 17148727214784.

The previous prime is 30030112123217. The next prime is 30030112123229. The reversal of 30030112123221 is 12232121103003.

It is not a de Polignac number, because 30030112123221 - 2² = 30030112123217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030112123229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232314435 + ... + 232443663.

It is an arithmetic number, because the mean of its divisors is an integer number (1430950350080).

Almost surely, 2^{30030112123221} is an apocalyptic number.

It is an amenable number.

30030112123221 is a deficient number, since it is larger than the sum of its proper divisors (15760299079339).

30030112123221 is a wasteful number, since it uses less digits than its factorization.

30030112123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136465.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30030112123221 its reverse (12232121103003), we get a palindrome (42262233226224).

The spelling of 30030112123221 in words is "thirty trillion, thirty billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".