1212201010121 has 8 divisors (see below), whose sum is σ = 1262998704384. Its totient is φ = 1162134218160.

The previous prime is 1212201010117. The next prime is 1212201010159. The reversal of 1212201010121 is 1210101022121.

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 1212201010121 - 2² = 1212201010117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212201010096 and 1212201010105.

It is not an unprimeable number, because it can be changed into a prime (1212201010171) 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, 182722190 + ... + 182728823.

It is an arithmetic number, because the mean of its divisors is an integer number (157874838048).

Almost surely, 2^{1212201010121} is an apocalyptic number.

It is an amenable number.

1212201010121 is a deficient number, since it is larger than the sum of its proper divisors (50797694263).

1212201010121 is a wasteful number, since it uses less digits than its factorization.

1212201010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365451151.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1212201010121 its reverse (1210101022121), we get a palindrome (2422302032242).

The spelling of 1212201010121 in words is "one trillion, two hundred twelve billion, two hundred one million, ten thousand, one hundred twenty-one".