103112123221 has 16 divisors (see below), whose sum is σ = 110757658176. Its totient is φ = 95651374336.

The previous prime is 103112123201. The next prime is 103112123243. The reversal of 103112123221 is 122321211301.

It is a cyclic number.

It is not a de Polignac number, because 103112123221 - 2⁵ = 103112123189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103112123201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214470 + ... + 502216.

It is an arithmetic number, because the mean of its divisors is an integer number (6922353636).

Almost surely, 2^103112123221 is an apocalyptic number.

It is an amenable number.

103112123221 is a deficient number, since it is larger than the sum of its proper divisors (7645534955).

103112123221 is a wasteful number, since it uses less digits than its factorization.

103112123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288068.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 103112123221 its reverse (122321211301), we get a palindrome (225433334522).

The spelling of 103112123221 in words is "one hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".