20123201121320 has 32 divisors (see below), whose sum is σ = 49393311844320. Its totient is φ = 7317527680320.

The previous prime is 20123201121307. The next prime is 20123201121343. The reversal of 20123201121320 is 2312110232102.

It is a super-3 number, since 3×20123201121320³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20123201121292 and 20123201121301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22867273562 + ... + 22867274441.

It is an arithmetic number, because the mean of its divisors is an integer number (1543540995135).

Almost surely, 2^{20123201121320} is an apocalyptic number.

20123201121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123201121320 is an abundant number, since it is smaller than the sum of its proper divisors (29270110723000).

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

20123201121320 is a wasteful number, since it uses less digits than its factorization.

20123201121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45734548025 (or 45734548021 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20123201121320 its reverse (2312110232102), we get a palindrome (22435311353422).

The spelling of 20123201121320 in words is "twenty trillion, one hundred twenty-three billion, two hundred one million, one hundred twenty-one thousand, three hundred twenty".