201201101993 has 2 divisors, whose sum is σ = 201201101994. Its totient is φ = 201201101992.

The previous prime is 201201101989. The next prime is 201201102043. The reversal of 201201101993 is 399101102102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195791205289 + 5409896704 = 442483^2 + 73552^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201101993 - 2² = 201201101989 is a prime.

It is not a weakly prime, because it can be changed into another prime (201201101953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600550996 + 100600550997.

It is an arithmetic number, because the mean of its divisors is an integer number (100600550997).

Almost surely, 2^201201101993 is an apocalyptic number.

It is an amenable number.

201201101993 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201101993 is an equidigital number, since it uses as much as digits as its factorization.

201201101993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 201201101993 in words is "two hundred one billion, two hundred one million, one hundred one thousand, nine hundred ninety-three".