201101209993 has 2 divisors, whose sum is σ = 201101209994. Its totient is φ = 201101209992.

The previous prime is 201101209951. The next prime is 201101210021. The reversal of 201101209993 is 399902101102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172716710464 + 28384499529 = 415592^2 + 168477^2 .

It is a cyclic number.

It is not a de Polignac number, because 201101209993 - 2¹⁷ = 201101078921 is a prime.

It is a super-3 number, since 3×201101209993³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (201101209093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550604996 + 100550604997.

It is an arithmetic number, because the mean of its divisors is an integer number (100550604997).

Almost surely, 2^201101209993 is an apocalyptic number.

It is an amenable number.

201101209993 is a deficient number, since it is larger than the sum of its proper divisors (1).

201101209993 is an equidigital number, since it uses as much as digits as its factorization.

201101209993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 201101209993 in words is "two hundred one billion, one hundred one million, two hundred nine thousand, nine hundred ninety-three".