30111022221 has 32 divisors (see below), whose sum is σ = 46161051648. Its totient is φ = 17102352960.

The previous prime is 30111022181. The next prime is 30111022247. The reversal of 30111022221 is 12222011103.

It is not a de Polignac number, because 30111022221 - 2³⁰ = 29037280397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30111022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30111022321) 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, 6908775 + ... + 6913131.

It is an arithmetic number, because the mean of its divisors is an integer number (1442532864).

Almost surely, 2^30111022221 is an apocalyptic number.

It is an amenable number.

30111022221 is a deficient number, since it is larger than the sum of its proper divisors (16050029427).

30111022221 is a wasteful number, since it uses less digits than its factorization.

30111022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30111022221 its reverse (12222011103), we get a palindrome (42333033324).

The spelling of 30111022221 in words is "thirty billion, one hundred eleven million, twenty-two thousand, two hundred twenty-one".