11661202650201 has 32 divisors (see below), whose sum is σ = 17134511708160. Its totient is φ = 7008903203904.

The previous prime is 11661202650133. The next prime is 11661202650203. The reversal of 11661202650201 is 10205620216611.

It is not a de Polignac number, because 11661202650201 - 2²¹ = 11661200553049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11661202650203) 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, 37488730 + ... + 37798508.

It is an arithmetic number, because the mean of its divisors is an integer number (535453490880).

Almost surely, 2^{11661202650201} is an apocalyptic number.

It is an amenable number.

11661202650201 is a deficient number, since it is larger than the sum of its proper divisors (5473309057959).

11661202650201 is a wasteful number, since it uses less digits than its factorization.

11661202650201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332285.

The product of its (nonzero) digits is 8640, while the sum is 33.

Adding to 11661202650201 its reverse (10205620216611), we get a palindrome (21866822866812).

The spelling of 11661202650201 in words is "eleven trillion, six hundred sixty-one billion, two hundred two million, six hundred fifty thousand, two hundred one".