222121111202111 has 8 divisors (see below), whose sum is σ = 242844166937424. Its totient is φ = 201486426707520.

The previous prime is 222121111202083. The next prime is 222121111202131. The reversal of 222121111202111 is 111202111121222.

It is a happy number.

222121111202111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222121111202111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121111202131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22092804920 + ... + 22092814973.

It is an arithmetic number, because the mean of its divisors is an integer number (30355520867178).

Almost surely, 2^{222121111202111} is an apocalyptic number.

222121111202111 is a deficient number, since it is larger than the sum of its proper divisors (20723055735313).

222121111202111 is a wasteful number, since it uses less digits than its factorization.

222121111202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44185620361.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 222121111202111 its reverse (111202111121222), we get a palindrome (333323222323333).

It can be divided in two parts, 222121111 and 202111, that added together give a palindrome (222323222).

The spelling of 222121111202111 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, two hundred two thousand, one hundred eleven".