121131232021201 has 16 divisors (see below), whose sum is σ = 121368468645760. Its totient is φ = 120894270906240.

The previous prime is 121131232021199. The next prime is 121131232021231. The reversal of 121131232021201 is 102120232131121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121131232021201 - 2¹ = 121131232021199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121131232021231) 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, 6616652890 + ... + 6616671196.

It is an arithmetic number, because the mean of its divisors is an integer number (7585529290360).

Almost surely, 2^{121131232021201} is an apocalyptic number.

It is an amenable number.

121131232021201 is a deficient number, since it is larger than the sum of its proper divisors (237236624559).

121131232021201 is a wasteful number, since it uses less digits than its factorization.

121131232021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25144.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 121131232021201 its reverse (102120232131121), we get a palindrome (223251464152322).

The spelling of 121131232021201 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-two million, twenty-one thousand, two hundred one".