22112101212121 has 4 divisors (see below), whose sum is σ = 22116163701712. Its totient is φ = 22108038722532.

The previous prime is 22112101212109. The next prime is 22112101212151. The reversal of 22112101212121 is 12121210121122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22112101212121 - 2¹⁵ = 22112101179353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22112101212151) 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, 2031236631 + ... + 2031247516.

It is an arithmetic number, because the mean of its divisors is an integer number (5529040925428).

Almost surely, 2^{22112101212121} is an apocalyptic number.

It is an amenable number.

22112101212121 is a deficient number, since it is larger than the sum of its proper divisors (4062489591).

22112101212121 is an equidigital number, since it uses as much as digits as its factorization.

22112101212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062489590.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22112101212121 its reverse (12121210121122), we get a palindrome (34233311333243).

The spelling of 22112101212121 in words is "twenty-two trillion, one hundred twelve billion, one hundred one million, two hundred twelve thousand, one hundred twenty-one".