1202111222121 has 12 divisors (see below), whose sum is σ = 1747882102720. Its totient is φ = 796100146200.

The previous prime is 1202111222077. The next prime is 1202111222149. The reversal of 1202111222121 is 1212221112021.

1202111222121 is a `hidden beast` number, since 120 + 211 + 122 + 212 + 1 = 666.

It is not a de Polignac number, because 1202111222121 - 2⁶ = 1202111222057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202111222094 and 1202111222103.

It is not an unprimeable number, because it can be changed into a prime (1202111222321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442276501 + ... + 442279218.

Almost surely, 2^{1202111222121} is an apocalyptic number.

It is an amenable number.

1202111222121 is a deficient number, since it is larger than the sum of its proper divisors (545770880599).

1202111222121 is a wasteful number, since it uses less digits than its factorization.

1202111222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884555876 (or 884555873 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1202111222121 its reverse (1212221112021), we get a palindrome (2414332334142).

The spelling of 1202111222121 in words is "one trillion, two hundred two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".