222111122220101 has 4 divisors (see below), whose sum is σ = 223107136221312. Its totient is φ = 221115108218892.

The previous prime is 222111122220079. The next prime is 222111122220107. The reversal of 222111122220101 is 101022221111222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222111122220101 is a prime.

It is a super-2 number, since 2×222111122220101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111122220107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498007000271 + ... + 498007000716.

It is an arithmetic number, because the mean of its divisors is an integer number (55776784055328).

Almost surely, 2^{222111122220101} is an apocalyptic number.

It is an amenable number.

222111122220101 is a deficient number, since it is larger than the sum of its proper divisors (996014001211).

222111122220101 is an equidigital number, since it uses as much as digits as its factorization.

222111122220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996014001210.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222111122220101 its reverse (101022221111222), we get a palindrome (323133343331323).

The spelling of 222111122220101 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, one hundred one".