123221331101 has 4 divisors (see below), whose sum is σ = 134423270304. Its totient is φ = 112019391900.

The previous prime is 123221331089. The next prime is 123221331113. The reversal of 123221331101 is 101133122321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (123221331089) and next prime (123221331113).

It is a cyclic number.

It is not a de Polignac number, because 123221331101 - 2²⁶ = 123154222237 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 (123221331001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600969585 + ... + 5600969606.

It is an arithmetic number, because the mean of its divisors is an integer number (33605817576).

Almost surely, 2^123221331101 is an apocalyptic number.

123221331101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123221331101 is a deficient number, since it is larger than the sum of its proper divisors (11201939203).

123221331101 is a wasteful number, since it uses less digits than its factorization.

123221331101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201939202.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123221331101 its reverse (101133122321), we get a palindrome (224354453422).

The spelling of 123221331101 in words is "one hundred twenty-three billion, two hundred twenty-one million, three hundred thirty-one thousand, one hundred one".