20123311032121 has 8 divisors (see below), whose sum is σ = 22157868393504. Its totient is φ = 18122947912320.

The previous prime is 20123311032109. The next prime is 20123311032133. The reversal of 20123311032121 is 12123011332102.

It is an interprime number because it is at equal distance from previous prime (20123311032109) and next prime (20123311032133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123311032121 - 2¹¹ = 20123311030073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123311032092 and 20123311032101.

It is not an unprimeable number, because it can be changed into a prime (20123311033121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8548559160 + ... + 8548561513.

It is an arithmetic number, because the mean of its divisors is an integer number (2769733549188).

Almost surely, 2^{20123311032121} is an apocalyptic number.

It is an amenable number.

20123311032121 is a deficient number, since it is larger than the sum of its proper divisors (2034557361383).

20123311032121 is a wasteful number, since it uses less digits than its factorization.

20123311032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17097120791.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20123311032121 its reverse (12123011332102), we get a palindrome (32246322364223).

The spelling of 20123311032121 in words is "twenty trillion, one hundred twenty-three billion, three hundred eleven million, thirty-two thousand, one hundred twenty-one".