1221222122134 has 16 divisors (see below), whose sum is σ = 2093665609728. Its totient is φ = 523345416552.

The previous prime is 1221222122117. The next prime is 1221222122177. The reversal of 1221222122134 is 4312212221221.

It is a junction number, because it is equal to n+sod(n) for n = 1221222122099 and 1221222122108.

It is a congruent number.

It is an unprimeable number.

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, 2743392 + ... + 3157315.

It is an arithmetic number, because the mean of its divisors is an integer number (130854100608).

Almost surely, 2^{1221222122134} is an apocalyptic number.

1221222122134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221222122134 is a deficient number, since it is larger than the sum of its proper divisors (872443487594).

1221222122134 is a wasteful number, since it uses less digits than its factorization.

1221222122134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915499.

The product of its digits is 1536, while the sum is 25.

Adding to 1221222122134 its reverse (4312212221221), we get a palindrome (5533434343355).

The spelling of 1221222122134 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred thirty-four".