1222012112109 has 4 divisors (see below), whose sum is σ = 1629349482816. Its totient is φ = 814674741404.

The previous prime is 1222012112051. The next prime is 1222012112137. The reversal of 1222012112109 is 9012112102221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222012112109 - 2¹⁵ = 1222012079341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012112179) 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 in 3 ways as a sum of consecutive naturals, for example, 203668685349 + ... + 203668685354.

It is an arithmetic number, because the mean of its divisors is an integer number (407337370704).

Almost surely, 2^{1222012112109} is an apocalyptic number.

It is an amenable number.

1222012112109 is a deficient number, since it is larger than the sum of its proper divisors (407337370707).

1222012112109 is an equidigital number, since it uses as much as digits as its factorization.

1222012112109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407337370706.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 1222012112109 in words is "one trillion, two hundred twenty-two billion, twelve million, one hundred twelve thousand, one hundred nine".