201001001269 has 2 divisors, whose sum is σ = 201001001270. Its totient is φ = 201001001268.

The previous prime is 201001001237. The next prime is 201001001281. The reversal of 201001001269 is 962100100102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198147839044 + 2853162225 = 445138^2 + 53415^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001001269 - 2⁵ = 201001001237 is a prime.

It is a super-2 number, since 2×201001001269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201002001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500500634 + 100500500635.

It is an arithmetic number, because the mean of its divisors is an integer number (100500500635).

Almost surely, 2^201001001269 is an apocalyptic number.

It is an amenable number.

201001001269 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001001269 is an equidigital number, since it uses as much as digits as its factorization.

201001001269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 201001001269 in words is "two hundred one billion, one million, one thousand, two hundred sixty-nine".