1022212222121 has 8 divisors (see below), whose sum is σ = 1082372349600. Its totient is φ = 962055427648.

The previous prime is 1022212222117. The next prime is 1022212222133. The reversal of 1022212222121 is 1212222122201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1022212222121 - 2² = 1022212222117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022212222093 and 1022212222102.

It is not an unprimeable number, because it can be changed into a prime (1022212222181) 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 7 ways as a sum of consecutive naturals, for example, 187511 + ... + 1442076.

It is an arithmetic number, because the mean of its divisors is an integer number (135296543700).

Almost surely, 2^{1022212222121} is an apocalyptic number.

It is an amenable number.

1022212222121 is a deficient number, since it is larger than the sum of its proper divisors (60160127479).

1022212222121 is a wasteful number, since it uses less digits than its factorization.

1022212222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666503.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1022212222121 its reverse (1212222122201), we get a palindrome (2234434344322).

The spelling of 1022212222121 in words is "one trillion, twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".