222016021779 has 32 divisors (see below), whose sum is σ = 319422761280. Its totient is φ = 136643899392.

The previous prime is 222016021757. The next prime is 222016021793. The reversal of 222016021779 is 977120610222.

It is not a de Polignac number, because 222016021779 - 2⁷ = 222016021651 is a prime.

It is a super-2 number, since 2×222016021779² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222016021739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17479359 + ... + 17492055.

It is an arithmetic number, because the mean of its divisors is an integer number (9981961290).

Almost surely, 2^222016021779 is an apocalyptic number.

222016021779 is a deficient number, since it is larger than the sum of its proper divisors (97406739501).

222016021779 is a wasteful number, since it uses less digits than its factorization.

222016021779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19239.

The product of its (nonzero) digits is 42336, while the sum is 39.

The spelling of 222016021779 in words is "two hundred twenty-two billion, sixteen million, twenty-one thousand, seven hundred seventy-nine".