222120012111 has 64 divisors (see below), whose sum is σ = 321699840000. Its totient is φ = 136025568000.

The previous prime is 222120012089. The next prime is 222120012131. The reversal of 222120012111 is 111210021222.

It is not a de Polignac number, because 222120012111 - 2⁹ = 222120011599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120012131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44430390 + ... + 44435388.

It is an arithmetic number, because the mean of its divisors is an integer number (5026560000).

Almost surely, 2^222120012111 is an apocalyptic number.

222120012111 is a deficient number, since it is larger than the sum of its proper divisors (99579827889).

222120012111 is a wasteful number, since it uses less digits than its factorization.

222120012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222120012111 its reverse (111210021222), we get a palindrome (333330033333).

The spelling of 222120012111 in words is "two hundred twenty-two billion, one hundred twenty million, twelve thousand, one hundred eleven".