22101200000121 has 32 divisors (see below), whose sum is σ = 33387010185600. Its totient is φ = 12886214330880.

The previous prime is 22101200000119. The next prime is 22101200000123. The reversal of 22101200000121 is 12100000210122.

It is an interprime number because it is at equal distance from previous prime (22101200000119) and next prime (22101200000123).

It is not a de Polignac number, because 22101200000121 - 2¹ = 22101200000119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22101200000097 and 22101200000106.

It is not an unprimeable number, because it can be changed into a prime (22101200000123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101581786 + ... + 101799123.

It is an arithmetic number, because the mean of its divisors is an integer number (1043344068300).

Almost surely, 2^{22101200000121} is an apocalyptic number.

It is an amenable number.

22101200000121 is a deficient number, since it is larger than the sum of its proper divisors (11285810185479).

22101200000121 is a wasteful number, since it uses less digits than its factorization.

22101200000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203381049.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101200000121 its reverse (12100000210122), we get a palindrome (34201200210243).

The spelling of 22101200000121 in words is "twenty-two trillion, one hundred one billion, two hundred million, one hundred twenty-one", and thus it is an aban number.