1221200001122 has 8 divisors (see below), whose sum is σ = 1831842289872. Its totient is φ = 610585904500.

The previous prime is 1221200001097. The next prime is 1221200001127. The reversal of 1221200001122 is 2211000021221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1221200001097 and 1221200001106.

It is not an unprimeable number, because it can be changed into a prime (1221200001127) 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 3 ways as a sum of consecutive naturals, for example, 6939404 + ... + 7113207.

It is an arithmetic number, because the mean of its divisors is an integer number (228980286234).

Almost surely, 2^{1221200001122} is an apocalyptic number.

1221200001122 is a deficient number, since it is larger than the sum of its proper divisors (610642288750).

1221200001122 is a wasteful number, since it uses less digits than its factorization.

1221200001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14096064.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1221200001122 its reverse (2211000021221), we get a palindrome (3432200022343).

The spelling of 1221200001122 in words is "one trillion, two hundred twenty-one billion, two hundred million, one thousand, one hundred twenty-two".