201102100001081 has 2 divisors, whose sum is σ = 201102100001082. Its totient is φ = 201102100001080.

The previous prime is 201102100001069. The next prime is 201102100001107. The reversal of 201102100001081 is 180100001201102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200881865958400 + 220234042681 = 14173280^2 + 469291^2 .

It is a cyclic number.

It is not a de Polignac number, because 201102100001081 - 2¹⁴ = 201102099984697 is a prime.

It is a super-2 number, since 2×201102100001081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201102100061081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100551050000540 + 100551050000541.

It is an arithmetic number, because the mean of its divisors is an integer number (100551050000541).

Almost surely, 2^{201102100001081} is an apocalyptic number.

It is an amenable number.

201102100001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102100001081 is an equidigital number, since it uses as much as digits as its factorization.

201102100001081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201102100001081 its reverse (180100001201102), we get a palindrome (381202101202183).

The spelling of 201102100001081 in words is "two hundred one trillion, one hundred two billion, one hundred million, one thousand, eighty-one".