9001200012211 has 4 divisors (see below), whose sum is σ = 9819490922424. Its totient is φ = 8182909102000.

The previous prime is 9001200012107. The next prime is 9001200012241. The reversal of 9001200012211 is 1122100021009.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9001200012211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9001200012241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409145455090 + ... + 409145455111.

It is an arithmetic number, because the mean of its divisors is an integer number (2454872730606).

Almost surely, 2^{9001200012211} is an apocalyptic number.

9001200012211 is a deficient number, since it is larger than the sum of its proper divisors (818290910213).

9001200012211 is a wasteful number, since it uses less digits than its factorization.

9001200012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818290910212.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 9001200012211 in words is "nine trillion, one billion, two hundred million, twelve thousand, two hundred eleven".