222201222212111 has 4 divisors (see below), whose sum is σ = 229369003573824. Its totient is φ = 215033440850400.

The previous prime is 222201222211999. The next prime is 222201222212113. The reversal of 222201222212111 is 111212222102222.

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-222201222212111 is a prime.

It is a super-3 number, since 3×222201222212111³ (a number of 44 digits) contains 333 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 (222201222212113) 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, 3583890680810 + ... + 3583890680871.

It is an arithmetic number, because the mean of its divisors is an integer number (57342250893456).

Almost surely, 2^{222201222212111} is an apocalyptic number.

222201222212111 is a deficient number, since it is larger than the sum of its proper divisors (7167781361713).

222201222212111 is an equidigital number, since it uses as much as digits as its factorization.

222201222212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167781361712.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222201222212111 its reverse (111212222102222), we get a palindrome (333413444314333).

The spelling of 222201222212111 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".