201214321564261 has 4 divisors (see below), whose sum is σ = 205495477342272. Its totient is φ = 196933165786252.

The previous prime is 201214321564253. The next prime is 201214321564271. The reversal of 201214321564261 is 162465123412102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201214321564261 - 2³ = 201214321564253 is a prime.

It is a super-2 number, since 2×201214321564261² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201214321564241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140577888935 + ... + 2140577889028.

It is an arithmetic number, because the mean of its divisors is an integer number (51373869335568).

Almost surely, 2^{201214321564261} is an apocalyptic number.

It is an amenable number.

201214321564261 is a deficient number, since it is larger than the sum of its proper divisors (4281155778011).

201214321564261 is an equidigital number, since it uses as much as digits as its factorization.

201214321564261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281155778010.

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 201214321564261 its reverse (162465123412102), we get a palindrome (363679444976363).

The spelling of 201214321564261 in words is "two hundred one trillion, two hundred fourteen billion, three hundred twenty-one million, five hundred sixty-four thousand, two hundred sixty-one".