1222202102121 has 160 divisors (see below), whose sum is σ = 2478926419200. Its totient is φ = 579482449920.

The previous prime is 1222202102119. The next prime is 1222202102131. The reversal of 1222202102121 is 1212012022221.

It is a happy number.

1222202102121 is a `hidden beast` number, since 1 + 22 + 220 + 210 + 212 + 1 = 666.

It is not a de Polignac number, because 1222202102121 - 2¹ = 1222202102119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222202102094 and 1222202102103.

It is not an unprimeable number, because it can be changed into a prime (1222202102131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7131525 + ... + 7300893.

It is an arithmetic number, because the mean of its divisors is an integer number (15493290120).

Almost surely, 2^{1222202102121} is an apocalyptic number.

1222202102121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222202102121 is an abundant number, since it is smaller than the sum of its proper divisors (1256724317079).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222202102121 is a wasteful number, since it uses less digits than its factorization.

1222202102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169501 (or 169492 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222202102121 its reverse (1212012022221), we get a palindrome (2434214124342).

The spelling of 1222202102121 in words is "one trillion, two hundred twenty-two billion, two hundred two million, one hundred two thousand, one hundred twenty-one".