1211222002109 has 8 divisors (see below), whose sum is σ = 1385108735040. Its totient is φ = 1037549023776.

The previous prime is 1211222002099. The next prime is 1211222002153. The reversal of 1211222002109 is 9012002221121.

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 1211222002109 - 2⁸ = 1211222001853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211222002409) 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, 53426504 + ... + 53449169.

It is an arithmetic number, because the mean of its divisors is an integer number (173138591880).

Almost surely, 2^{1211222002109} is an apocalyptic number.

It is an amenable number.

1211222002109 is a deficient number, since it is larger than the sum of its proper divisors (173886732931).

1211222002109 is a wasteful number, since it uses less digits than its factorization.

1211222002109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106877299.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1211222002109 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, two thousand, one hundred nine".