1201220001121 has 8 divisors (see below), whose sum is σ = 1420161577920. Its totient is φ = 994113104208.

The previous prime is 1201220001089. The next prime is 1201220001203. The reversal of 1201220001121 is 1211000221021.

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

It is not a de Polignac number, because 1201220001121 - 2⁵ = 1201220001089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201220001521) 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, 2958669751 + ... + 2958670156.

It is an arithmetic number, because the mean of its divisors is an integer number (177520197240).

Almost surely, 2^{1201220001121} is an apocalyptic number.

It is an amenable number.

1201220001121 is a deficient number, since it is larger than the sum of its proper divisors (218941576799).

1201220001121 is an equidigital number, since it uses as much as digits as its factorization.

1201220001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917339943.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201220001121 its reverse (1211000221021), we get a palindrome (2412220222142).

The spelling of 1201220001121 in words is "one trillion, two hundred one billion, two hundred twenty million, one thousand, one hundred twenty-one".