201212111953 has 2 divisors, whose sum is σ = 201212111954. Its totient is φ = 201212111952.

The previous prime is 201212111941. The next prime is 201212111977. The reversal of 201212111953 is 359111212102.

201212111953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186051607569 + 15160504384 = 431337^2 + 123128^2 .

It is a cyclic number.

It is not a de Polignac number, because 201212111953 - 2⁵ = 201212111921 is a prime.

It is a super-3 number, since 3×201212111953³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (201212111453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606055976 + 100606055977.

It is an arithmetic number, because the mean of its divisors is an integer number (100606055977).

Almost surely, 2^201212111953 is an apocalyptic number.

It is an amenable number.

201212111953 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212111953 is an equidigital number, since it uses as much as digits as its factorization.

201212111953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 201212111953 in words is "two hundred one billion, two hundred twelve million, one hundred eleven thousand, nine hundred fifty-three".