2201321610161 has 16 divisors (see below), whose sum is σ = 2272469433600. Its totient is φ = 2130789862080.

The previous prime is 2201321610157. The next prime is 2201321610179. The reversal of 2201321610161 is 1610161231022.

It is a cyclic number.

It is not a de Polignac number, because 2201321610161 - 2² = 2201321610157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2201321610161.

It is not an unprimeable number, because it can be changed into a prime (2201321510161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79955780 + ... + 79983306.

It is an arithmetic number, because the mean of its divisors is an integer number (142029339600).

Almost surely, 2^{2201321610161} is an apocalyptic number.

It is an amenable number.

2201321610161 is a deficient number, since it is larger than the sum of its proper divisors (71147823439).

2201321610161 is a wasteful number, since it uses less digits than its factorization.

2201321610161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38624.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 2201321610161 its reverse (1610161231022), we get a palindrome (3811482841183).

The spelling of 2201321610161 in words is "two trillion, two hundred one billion, three hundred twenty-one million, six hundred ten thousand, one hundred sixty-one".