103221220312 has 32 divisors (see below), whose sum is σ = 230805216000. Its totient is φ = 42314288544.

The previous prime is 103221220283. The next prime is 103221220337. The reversal of 103221220312 is 213022122301.

It is a self number, because there is not a number n which added to its sum of digits gives 103221220312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40069062 + ... + 40071637.

It is an arithmetic number, because the mean of its divisors is an integer number (7212663000).

Almost surely, 2^103221220312 is an apocalyptic number.

It is an amenable number.

103221220312 is an abundant number, since it is smaller than the sum of its proper divisors (127583995688).

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

103221220312 is a wasteful number, since it uses less digits than its factorization.

103221220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80140735 (or 80140731 counting only the distinct ones).

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

Adding to 103221220312 its reverse (213022122301), we get a palindrome (316243342613).

The spelling of 103221220312 in words is "one hundred three billion, two hundred twenty-one million, two hundred twenty thousand, three hundred twelve".