123213100110 has 64 divisors (see below), whose sum is σ = 306172154880. Its totient is φ = 31696479360.

The previous prime is 123213100103. The next prime is 123213100117. The reversal of 123213100110 is 11001312321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123213100103) and next prime (123213100117).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123213100110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213100117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 958299 + ... + 1079241.

It is an arithmetic number, because the mean of its divisors is an integer number (4783939920).

Almost surely, 2^123213100110 is an apocalyptic number.

123213100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123213100110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153086077440).

123213100110 is an abundant number, since it is smaller than the sum of its proper divisors (182959054770).

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

123213100110 is a wasteful number, since it uses less digits than its factorization.

123213100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122153.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123213100110 its reverse (11001312321), we get a palindrome (134214412431).

The spelling of 123213100110 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred thousand, one hundred ten".