20031122201 has 2 divisors, whose sum is σ = 20031122202. Its totient is φ = 20031122200.

The previous prime is 20031122173. The next prime is 20031122231. The reversal of 20031122201 is 10222113002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16389120400 + 3642001801 = 128020^2 + 60349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20031122201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20031122231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015561100 + 10015561101.

It is an arithmetic number, because the mean of its divisors is an integer number (10015561101).

Almost surely, 2^20031122201 is an apocalyptic number.

It is an amenable number.

20031122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031122201 is an equidigital number, since it uses as much as digits as its factorization.

20031122201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20031122201 its reverse (10222113002), we get a palindrome (30253235203).

The spelling of 20031122201 in words is "twenty billion, thirty-one million, one hundred twenty-two thousand, two hundred one".