20100231101 has 2 divisors, whose sum is σ = 20100231102. Its totient is φ = 20100231100.

The previous prime is 20100231059. The next prime is 20100231127. The reversal of 20100231101 is 10113200102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17677032025 + 2423199076 = 132955^2 + 49226^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100231101 - 2²⁶ = 20033122237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100231131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050115550 + 10050115551.

It is an arithmetic number, because the mean of its divisors is an integer number (10050115551).

Almost surely, 2^20100231101 is an apocalyptic number.

It is an amenable number.

20100231101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100231101 is an equidigital number, since it uses as much as digits as its factorization.

20100231101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20100231101 its reverse (10113200102), we get a palindrome (30213431203).

The spelling of 20100231101 in words is "twenty billion, one hundred million, two hundred thirty-one thousand, one hundred one".