1221222102122 has 8 divisors (see below), whose sum is σ = 1998363439872. Its totient is φ = 555100955500.

The previous prime is 1221222102109. The next prime is 1221222102161. The reversal of 1221222102122 is 2212012221221.

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

It is a super-2 number, since 2×1221222102122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221222102094 and 1221222102103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27755047754 + ... + 27755047797.

It is an arithmetic number, because the mean of its divisors is an integer number (249795429984).

Almost surely, 2^{1221222102122} is an apocalyptic number.

1221222102122 is a deficient number, since it is larger than the sum of its proper divisors (777141337750).

1221222102122 is a wasteful number, since it uses less digits than its factorization.

1221222102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55510095564.

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

Adding to 1221222102122 its reverse (2212012221221), we get a palindrome (3433234323343).

The spelling of 1221222102122 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-two".