222120121010111 has 24 divisors (see below), whose sum is σ = 246392822843424. Its totient is φ = 199819268042240.

The previous prime is 222120121010101. The next prime is 222120121010131. The reversal of 222120121010111 is 111010121021222.

It is a de Polignac number, because none of the positive numbers 2^k-222120121010111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 222120121010111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120121010101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3042860 + ... + 21295521.

It is an arithmetic number, because the mean of its divisors is an integer number (10266367618476).

Almost surely, 2^{222120121010111} is an apocalyptic number.

222120121010111 is a deficient number, since it is larger than the sum of its proper divisors (24272701833313).

222120121010111 is a wasteful number, since it uses less digits than its factorization.

222120121010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24339811 (or 24339794 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 222120121010111 its reverse (111010121021222), we get a palindrome (333130242031333).

The spelling of 222120121010111 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, ten thousand, one hundred eleven".