222121566665027 has 32 divisors (see below), whose sum is σ = 226891966080000. Its totient is φ = 217409233507200.

The previous prime is 222121566664997. The next prime is 222121566665039. The reversal of 222121566665027 is 720566665121222.

It is a cyclic number.

It is not a de Polignac number, because 222121566665027 - 2¹⁴ = 222121566648643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222121566665027.

It is not an unprimeable number, because it can be changed into a prime (222121566665077) 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, 38119366688 + ... + 38119372514.

It is an arithmetic number, because the mean of its divisors is an integer number (7090373940000).

Almost surely, 2^{222121566665027} is an apocalyptic number.

222121566665027 is a deficient number, since it is larger than the sum of its proper divisors (4770399414973).

222121566665027 is a wasteful number, since it uses less digits than its factorization.

222121566665027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11763.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 222121566665027 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, five hundred sixty-six million, six hundred sixty-five thousand, twenty-seven".