20123313211320 has 64 divisors (see below), whose sum is σ = 65858115968640. Its totient is φ = 4878378960000.

The previous prime is 20123313211289. The next prime is 20123313211357. The reversal of 20123313211320 is 2311231332102.

It is a super-2 number, since 2×20123313211320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7622465806 + ... + 7622468445.

It is an arithmetic number, because the mean of its divisors is an integer number (1029033062010).

Almost surely, 2^{20123313211320} is an apocalyptic number.

20123313211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123313211320 is an abundant number, since it is smaller than the sum of its proper divisors (45734802757320).

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

20123313211320 is a wasteful number, since it uses less digits than its factorization.

20123313211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15244934276 (or 15244934272 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20123313211320 its reverse (2311231332102), we get a palindrome (22434544543422).

The spelling of 20123313211320 in words is "twenty trillion, one hundred twenty-three billion, three hundred thirteen million, two hundred eleven thousand, three hundred twenty".