1202221211121 has 32 divisors (see below), whose sum is σ = 2101168332800. Its totient is φ = 664822786320.

The previous prime is 1202221211111. The next prime is 1202221211173. The reversal of 1202221211121 is 1211121222021.

It is not a de Polignac number, because 1202221211121 - 2⁶ = 1202221211057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202221211094 and 1202221211103.

It is not an unprimeable number, because it can be changed into a prime (1202221211101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102590251 + ... + 102601968.

It is an arithmetic number, because the mean of its divisors is an integer number (65661510400).

Almost surely, 2^{1202221211121} is an apocalyptic number.

It is an amenable number.

1202221211121 is a deficient number, since it is larger than the sum of its proper divisors (898947121679).

1202221211121 is a wasteful number, since it uses less digits than its factorization.

1202221211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205192266 (or 205192260 counting only the distinct ones).

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

Adding to 1202221211121 its reverse (1211121222021), we get a palindrome (2413342433142).

The spelling of 1202221211121 in words is "one trillion, two hundred two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred twenty-one".