20123133032121 has 12 divisors (see below), whose sum is σ = 31211390009232. Its totient is φ = 11498933161128.

The previous prime is 20123133032081. The next prime is 20123133032183. The reversal of 20123133032121 is 12123033132102.

It is not a de Polignac number, because 20123133032121 - 2¹⁵ = 20123132999353 is a prime.

It is a super-2 number, since 2×20123133032121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123133032091 and 20123133032100.

It is not an unprimeable number, because it can be changed into a prime (20123133032621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68446030575 + ... + 68446030868.

It is an arithmetic number, because the mean of its divisors is an integer number (2600949167436).

Almost surely, 2^{20123133032121} is an apocalyptic number.

20123133032121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20123133032121 is a deficient number, since it is larger than the sum of its proper divisors (11088256977111).

20123133032121 is a wasteful number, since it uses less digits than its factorization.

20123133032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136892061460 (or 136892061453 counting only the distinct ones).

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

Adding to 20123133032121 its reverse (12123033132102), we get a palindrome (32246166164223).

The spelling of 20123133032121 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, thirty-two thousand, one hundred twenty-one".