201214321564251 has 32 divisors (see below), whose sum is σ = 284318536347648. Its totient is φ = 126140487943680.

The previous prime is 201214321564241. The next prime is 201214321564253. The reversal of 201214321564251 is 152465123412102.

It is not a de Polignac number, because 201214321564251 - 2¹¹ = 201214321562203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201214321564253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369806740 + ... + 370350446.

It is an arithmetic number, because the mean of its divisors is an integer number (8884954260864).

Almost surely, 2^{201214321564251} is an apocalyptic number.

201214321564251 is a deficient number, since it is larger than the sum of its proper divisors (83104214783397).

201214321564251 is a wasteful number, since it uses less digits than its factorization.

201214321564251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550131.

The product of its (nonzero) digits is 115200, while the sum is 39.

Adding to 201214321564251 its reverse (152465123412102), we get a palindrome (353679444976353).

The spelling of 201214321564251 in words is "two hundred one trillion, two hundred fourteen billion, three hundred twenty-one million, five hundred sixty-four thousand, two hundred fifty-one".