20123211320000 has 140 divisors (see below), whose sum is σ = 49908530607936. Its totient is φ = 8047751040000.

The previous prime is 20123211319999. The next prime is 20123211320021. The reversal of 20123211320000 is 2311232102.

It is a super-2 number, since 2×20123211320000² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 222874865 + ... + 222965135.

Almost surely, 2^{20123211320000} is an apocalyptic number.

20123211320000 is a gapful number since it is divisible by the number (20) 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 20123211320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24954265303968).

20123211320000 is an abundant number, since it is smaller than the sum of its proper divisors (29785319287936).

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

20123211320000 is an frugal number, since it uses more digits than its factorization.

20123211320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95876 (or 95851 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123211320000 its reverse (2311232102), we get a palindrome (20125522552102).

The spelling of 20123211320000 in words is "twenty trillion, one hundred twenty-three billion, two hundred eleven million, three hundred twenty thousand".