22011100112121 has 4 divisors (see below), whose sum is σ = 29348133482832. Its totient is φ = 14674066741412.

The previous prime is 22011100112017. The next prime is 22011100112143. The reversal of 22011100112121 is 12121100111022.

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 22011100112121 - 2¹⁰ = 22011100111097 is a prime.

It is a super-2 number, since 2×22011100112121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22011100112121.

It is not an unprimeable number, because it can be changed into a prime (22011100112191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3668516685351 + ... + 3668516685356.

It is an arithmetic number, because the mean of its divisors is an integer number (7337033370708).

Almost surely, 2^{22011100112121} is an apocalyptic number.

It is an amenable number.

22011100112121 is a deficient number, since it is larger than the sum of its proper divisors (7337033370711).

22011100112121 is an equidigital number, since it uses as much as digits as its factorization.

22011100112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337033370710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22011100112121 its reverse (12121100111022), we get a palindrome (34132200223143).

The spelling of 22011100112121 in words is "twenty-two trillion, eleven billion, one hundred million, one hundred twelve thousand, one hundred twenty-one".