221922000309 has 8 divisors (see below), whose sum is σ = 301478944032. Its totient is φ = 145156528400.

The previous prime is 221922000211. The next prime is 221922000323. The reversal of 221922000309 is 903000229122.

It is a happy number.

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 221922000309 - 2¹¹ = 221921998261 is a prime.

It is a super-2 number, since 2×221922000309² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221922000109) 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, 697867767 + ... + 697868084.

It is an arithmetic number, because the mean of its divisors is an integer number (37684868004).

Almost surely, 2^221922000309 is an apocalyptic number.

It is an amenable number.

221922000309 is a deficient number, since it is larger than the sum of its proper divisors (79556943723).

221922000309 is a wasteful number, since it uses less digits than its factorization.

221922000309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395735907.

The product of its (nonzero) digits is 3888, while the sum is 30.

The spelling of 221922000309 in words is "two hundred twenty-one billion, nine hundred twenty-two million, three hundred nine", and thus it is an aban number.