1122121211209 has 8 divisors (see below), whose sum is σ = 1127136886880. Its totient is φ = 1117114648416.

The previous prime is 1122121211111. The next prime is 1122121211231. The reversal of 1122121211209 is 9021121212211.

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

It is a cyclic number.

It is not a de Polignac number, because 1122121211209 - 2¹⁵ = 1122121178441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122121211269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031339 + ... + 2524000.

It is an arithmetic number, because the mean of its divisors is an integer number (140892110860).

Almost surely, 2^{1122121211209} is an apocalyptic number.

It is an amenable number.

1122121211209 is a deficient number, since it is larger than the sum of its proper divisors (5015675671).

1122121211209 is an equidigital number, since it uses as much as digits as its factorization.

1122121211209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556439.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1122121211209 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred nine".