22000121100121 has 4 divisors (see below), whose sum is σ = 22048261409332. Its totient is φ = 21951980790912.

The previous prime is 22000121100103. The next prime is 22000121100151. The reversal of 22000121100121 is 12100112100022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11983117648896 + 10017003451225 = 3461664^2 + 3164965^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000121100121 - 2²¹ = 22000119002969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000121100151) 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, 24070153920 + ... + 24070154833.

It is an arithmetic number, because the mean of its divisors is an integer number (5512065352333).

Almost surely, 2^{22000121100121} is an apocalyptic number.

It is an amenable number.

22000121100121 is a deficient number, since it is larger than the sum of its proper divisors (48140309211).

22000121100121 is an equidigital number, since it uses as much as digits as its factorization.

22000121100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48140309210.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22000121100121 its reverse (12100112100022), we get a palindrome (34100233200143).

Subtracting from 22000121100121 its reverse (12100112100022), we obtain a palindrome (9900009000099).

The spelling of 22000121100121 in words is "twenty-two trillion, one hundred twenty-one million, one hundred thousand, one hundred twenty-one".