221022122107 has 4 divisors (see below), whose sum is σ = 225192350880. Its totient is φ = 216851893336.

The previous prime is 221022122077. The next prime is 221022122129. The reversal of 221022122107 is 701221220122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221022122107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022122137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085114307 + ... + 2085114412.

It is an arithmetic number, because the mean of its divisors is an integer number (56298087720).

Almost surely, 2^221022122107 is an apocalyptic number.

221022122107 is a deficient number, since it is larger than the sum of its proper divisors (4170228773).

221022122107 is an equidigital number, since it uses as much as digits as its factorization.

221022122107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170228772.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 221022122107 its reverse (701221220122), we get a palindrome (922243342229).

The spelling of 221022122107 in words is "two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one hundred seven".