123213100000 has 144 divisors (see below), whose sum is σ = 319163166000. Its totient is φ = 46690560000.

The previous prime is 123213099991. The next prime is 123213100037. The reversal of 123213100000 is 1312321.

It is a super-2 number, since 2×123213100000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1867576 + ... + 1932424.

It is an arithmetic number, because the mean of its divisors is an integer number (2216410875).

Almost surely, 2^123213100000 is an apocalyptic number.

123213100000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123213100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159581583000).

123213100000 is an abundant number, since it is smaller than the sum of its proper divisors (195950066000).

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

123213100000 is an frugal number, since it uses more digits than its factorization.

123213100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64903 (or 64875 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 123213100000 its reverse (1312321), we get a palindrome (123214412321).

The spelling of 123213100000 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred thousand".