2153161220201 has 4 divisors (see below), whose sum is σ = 2180416425600. Its totient is φ = 2125906014804.

The previous prime is 2153161220191. The next prime is 2153161220227. The reversal of 2153161220201 is 1020221613512.

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 a de Polignac number, because none of the positive numbers 2^k-2153161220201 is a prime.

It is a super-2 number, since 2×2153161220201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2153161220401) 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, 13627602581 + ... + 13627602738.

It is an arithmetic number, because the mean of its divisors is an integer number (545104106400).

Almost surely, 2^{2153161220201} is an apocalyptic number.

It is an amenable number.

2153161220201 is a deficient number, since it is larger than the sum of its proper divisors (27255205399).

2153161220201 is an equidigital number, since it uses as much as digits as its factorization.

2153161220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27255205398.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 2153161220201 its reverse (1020221613512), we get a palindrome (3173382833713).

The spelling of 2153161220201 in words is "two trillion, one hundred fifty-three billion, one hundred sixty-one million, two hundred twenty thousand, two hundred one".