1201102231121 has 4 divisors (see below), whose sum is σ = 1293494710452. Its totient is φ = 1108709751792.

The previous prime is 1201102231117. The next prime is 1201102231127. The reversal of 1201102231121 is 1211322011021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62530003600 + 1138572227521 = 250060^2 + 1067039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201102231121 - 2² = 1201102231117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201102231121.

It is not an unprimeable number, because it can be changed into a prime (1201102231127) 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, 46196239646 + ... + 46196239671.

It is an arithmetic number, because the mean of its divisors is an integer number (323373677613).

Almost surely, 2^{1201102231121} is an apocalyptic number.

It is an amenable number.

1201102231121 is a deficient number, since it is larger than the sum of its proper divisors (92392479331).

1201102231121 is an equidigital number, since it uses as much as digits as its factorization.

1201102231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92392479330.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1201102231121 its reverse (1211322011021), we get a palindrome (2412424242142).

The spelling of 1201102231121 in words is "one trillion, two hundred one billion, one hundred two million, two hundred thirty-one thousand, one hundred twenty-one".