1221101122022 has 24 divisors (see below), whose sum is σ = 1945819666056. Its totient is φ = 574610462208.

The previous prime is 1221101122009. The next prime is 1221101122049. The reversal of 1221101122022 is 2202211011221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22418273 + ... + 22472675.

It is an arithmetic number, because the mean of its divisors is an integer number (81075819419).

Almost surely, 2^{1221101122022} is an apocalyptic number.

1221101122022 is a deficient number, since it is larger than the sum of its proper divisors (724718544034).

1221101122022 is a wasteful number, since it uses less digits than its factorization.

1221101122022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93272 (or 93255 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221101122022 its reverse (2202211011221), we get a palindrome (3423312133243).

The spelling of 1221101122022 in words is "one trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-two thousand, twenty-two".