22222021209 has 8 divisors (see below), whose sum is σ = 29689708512. Its totient is φ = 14784507360.

The previous prime is 22222021201. The next prime is 22222021231. The reversal of 22222021209 is 90212022222.

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

It is not a de Polignac number, because 22222021209 - 2³ = 22222021201 is a prime.

It is a super-2 number, since 2×22222021209² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22222021201) 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, 7541644 + ... + 7544589.

It is an arithmetic number, because the mean of its divisors is an integer number (3711213564).

Almost surely, 2^22222021209 is an apocalyptic number.

It is an amenable number.

22222021209 is a deficient number, since it is larger than the sum of its proper divisors (7467687303).

22222021209 is a wasteful number, since it uses less digits than its factorization.

22222021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15086727.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 22222021209 in words is "twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred nine".