30312211222 has 16 divisors (see below), whose sum is σ = 47870766000. Its totient is φ = 14355601920.

The previous prime is 30312211217. The next prime is 30312211243. The reversal of 30312211222 is 22211221303.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 30312211222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125154 + ... + 276202.

It is an arithmetic number, because the mean of its divisors is an integer number (2991922875).

Almost surely, 2^30312211222 is an apocalyptic number.

30312211222 is a deficient number, since it is larger than the sum of its proper divisors (17558554778).

30312211222 is a wasteful number, since it uses less digits than its factorization.

30312211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156351.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30312211222 its reverse (22211221303), we get a palindrome (52523432525).

The spelling of 30312211222 in words is "thirty billion, three hundred twelve million, two hundred eleven thousand, two hundred twenty-two".