103212111222 has 128 divisors (see below), whose sum is σ = 259162675200. Its totient is φ = 30160166400.

The previous prime is 103212111221. The next prime is 103212111253. The reversal of 103212111222 is 222111212301.

103212111222 is a `hidden beast` number, since 10 + 321 + 2 + 111 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 103212111195 and 103212111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212111221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15689598 + ... + 15696174.

It is an arithmetic number, because the mean of its divisors is an integer number (2024708400).

Almost surely, 2^103212111222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103212111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129581337600).

103212111222 is an abundant number, since it is smaller than the sum of its proper divisors (155950563978).

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

103212111222 is a wasteful number, since it uses less digits than its factorization.

103212111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7539 (or 7533 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 103212111222 its reverse (222111212301), we get a palindrome (325323323523).

The spelling of 103212111222 in words is "one hundred three billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-two".