911021212222 has 8 divisors (see below), whose sum is σ = 1490761983672. Its totient is φ = 414100551000.

The previous prime is 911021212201. The next prime is 911021212237. The reversal of 911021212222 is 222212120119.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20705027529 + ... + 20705027572.

It is an arithmetic number, because the mean of its divisors is an integer number (186345247959).

Almost surely, 2^911021212222 is an apocalyptic number.

911021212222 is a deficient number, since it is larger than the sum of its proper divisors (579740771450).

911021212222 is a wasteful number, since it uses less digits than its factorization.

911021212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41410055114.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 911021212222 in words is "nine hundred eleven billion, twenty-one million, two hundred twelve thousand, two hundred twenty-two".