201121220131 has 8 divisors (see below), whose sum is σ = 216639019184. Its totient is φ = 185610126240.

The previous prime is 201121220129. The next prime is 201121220189. The reversal of 201121220131 is 131022121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201121220131 - 2¹ = 201121220129 is a prime.

It is a super-2 number, since 2×201121220131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121220231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613901 + ... + 1734046.

It is an arithmetic number, because the mean of its divisors is an integer number (27079877398).

Almost surely, 2^201121220131 is an apocalyptic number.

201121220131 is a deficient number, since it is larger than the sum of its proper divisors (15517799053).

201121220131 is a wasteful number, since it uses less digits than its factorization.

201121220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352581.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 201121220131 its reverse (131022121102), we get a palindrome (332143341233).

The spelling of 201121220131 in words is "two hundred one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred thirty-one".