1022112221121 has 24 divisors (see below), whose sum is σ = 1570110316320. Its totient is φ = 638889451776.

The previous prime is 1022112221113. The next prime is 1022112221149. The reversal of 1022112221121 is 1211222112201.

It is not a de Polignac number, because 1022112221121 - 2³ = 1022112221113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022112221094 and 1022112221103.

It is not an unprimeable number, because it can be changed into a prime (1022112221171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30794055 + ... + 30827228.

It is an arithmetic number, because the mean of its divisors is an integer number (65421263180).

Almost surely, 2^{1022112221121} is an apocalyptic number.

It is an amenable number.

1022112221121 is a deficient number, since it is larger than the sum of its proper divisors (547998095199).

1022112221121 is a wasteful number, since it uses less digits than its factorization.

1022112221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61621405 (or 61621402 counting only the distinct ones).

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

Adding to 1022112221121 its reverse (1211222112201), we get a palindrome (2233334333322).

The spelling of 1022112221121 in words is "one trillion, twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-one".