22222101221121 has 16 divisors (see below), whose sum is σ = 29728160164736. Its totient is φ = 14765439701376.

The previous prime is 22222101221081. The next prime is 22222101221123. The reversal of 22222101221121 is 12112210122222.

It is not a de Polignac number, because 22222101221121 - 2¹³ = 22222101212929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22222101221123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4708540 + ... + 8161773.

It is an arithmetic number, because the mean of its divisors is an integer number (1858010010296).

Almost surely, 2^{22222101221121} is an apocalyptic number.

It is an amenable number.

22222101221121 is a deficient number, since it is larger than the sum of its proper divisors (7506058943615).

22222101221121 is a wasteful number, since it uses less digits than its factorization.

22222101221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12872232.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22222101221121 its reverse (12112210122222), we get a palindrome (34334311343343).

The spelling of 22222101221121 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, one hundred twenty-one".