20031122141 has 2 divisors, whose sum is σ = 20031122142. Its totient is φ = 20031122140.

The previous prime is 20031122129. The next prime is 20031122147. The reversal of 20031122141 is 14122113002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19175325625 + 855796516 = 138475^2 + 29254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031122141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20031122147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015561070 + 10015561071.

It is an arithmetic number, because the mean of its divisors is an integer number (10015561071).

Almost surely, 2^20031122141 is an apocalyptic number.

It is an amenable number.

20031122141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031122141 is an equidigital number, since it uses as much as digits as its factorization.

20031122141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20031122141 its reverse (14122113002), we get a palindrome (34153235143).

The spelling of 20031122141 in words is "twenty billion, thirty-one million, one hundred twenty-two thousand, one hundred forty-one".