1221200000107 has 2 divisors, whose sum is σ = 1221200000108. Its totient is φ = 1221200000106.

The previous prime is 1221200000101. The next prime is 1221200000147. The reversal of 1221200000107 is 7010000021221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221200000107 - 2¹¹ = 1221199998059 is a prime.

It is a super-2 number, since 2×1221200000107² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221200000101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610600000053 + 610600000054.

It is an arithmetic number, because the mean of its divisors is an integer number (610600000054).

Almost surely, 2^{1221200000107} is an apocalyptic number.

1221200000107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221200000107 is an equidigital number, since it uses as much as digits as its factorization.

1221200000107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 1221200000107 its reverse (7010000021221), we get a palindrome (8231200021328).

The spelling of 1221200000107 in words is "one trillion, two hundred twenty-one billion, two hundred million, one hundred seven", and thus it is an aban number.