201201999949 has 2 divisors, whose sum is σ = 201201999950. Its totient is φ = 201201999948.

The previous prime is 201201999919. The next prime is 201202000019. The reversal of 201201999949 is 949999102102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103029444324 + 98172555625 = 320982^2 + 313325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201201999949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201201999949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201201999919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600999974 + 100600999975.

It is an arithmetic number, because the mean of its divisors is an integer number (100600999975).

Almost surely, 2^201201999949 is an apocalyptic number.

It is an amenable number.

201201999949 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201999949 is an equidigital number, since it uses as much as digits as its factorization.

201201999949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 55.

The spelling of 201201999949 in words is "two hundred one billion, two hundred one million, nine hundred ninety-nine thousand, nine hundred forty-nine".