919226121 has 16 divisors (see below), whose sum is σ = 1341370368. Its totient is φ = 555309200.

The previous prime is 919226101. The next prime is 919226123. The reversal of 919226121 is 121622919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-919226121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (919226123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34521 + ... + 55046.

It is an arithmetic number, because the mean of its divisors is an integer number (83835648).

Almost surely, 2^919226121 is an apocalyptic number.

It is an amenable number.

919226121 is a deficient number, since it is larger than the sum of its proper divisors (422144247).

919226121 is a wasteful number, since it uses less digits than its factorization.

919226121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89892.

The product of its digits is 3888, while the sum is 33.

The square root of 919226121 is about 30318.7420748289. The cubic root of 919226121 is about 972.3160446219.

The spelling of 919226121 in words is "nine hundred nineteen million, two hundred twenty-six thousand, one hundred twenty-one".