1201222110121 has 8 divisors (see below), whose sum is σ = 1314692606304. Its totient is φ = 1088463028320.

The previous prime is 1201222110113. The next prime is 1201222110161. The reversal of 1201222110121 is 1210112221021.

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 1201222110121 - 2³ = 1201222110113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201222110095 and 1201222110104.

It is not an unprimeable number, because it can be changed into a prime (1201222110161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177850060 + ... + 177856813.

It is an arithmetic number, because the mean of its divisors is an integer number (164336575788).

Almost surely, 2^{1201222110121} is an apocalyptic number.

1201222110121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201222110121 is a deficient number, since it is larger than the sum of its proper divisors (113470496183).

1201222110121 is a wasteful number, since it uses less digits than its factorization.

1201222110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355707191.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201222110121 its reverse (1210112221021), we get a palindrome (2411334331142).

The spelling of 1201222110121 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty-one".