22011000121 has 32 divisors (see below), whose sum is σ = 25653335040. Its totient is φ = 18664089600.

The previous prime is 22011000107. The next prime is 22011000139. The reversal of 22011000121 is 12100011022.

It is a cyclic number.

It is not a de Polignac number, because 22011000121 - 2¹¹ = 22010998073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011000098 and 22011000107.

It is not an unprimeable number, because it can be changed into a prime (22011000181) 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, 15295320 + ... + 15296758.

It is an arithmetic number, because the mean of its divisors is an integer number (801666720).

Almost surely, 2^22011000121 is an apocalyptic number.

It is an amenable number.

22011000121 is a deficient number, since it is larger than the sum of its proper divisors (3642334919).

22011000121 is a wasteful number, since it uses less digits than its factorization.

22011000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22011000121 its reverse (12100011022), we get a palindrome (34111011143).

The spelling of 22011000121 in words is "twenty-two billion, eleven million, one hundred twenty-one", and thus it is an aban number.