22001001000121 has 16 divisors (see below), whose sum is σ = 27207715631040. Its totient is φ = 17490674329920.

The previous prime is 22001001000113. The next prime is 22001001000169. The reversal of 22001001000121 is 12100010010022.

It is not a de Polignac number, because 22001001000121 - 2³ = 22001001000113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001001000098 and 22001001000107.

It is not an unprimeable number, because it can be changed into a prime (22001071000121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4048764490 + ... + 4048769923.

It is an arithmetic number, because the mean of its divisors is an integer number (1700482226940).

Almost surely, 2^{22001001000121} is an apocalyptic number.

It is an amenable number.

22001001000121 is a deficient number, since it is larger than the sum of its proper divisors (5206714630919).

22001001000121 is a wasteful number, since it uses less digits than its factorization.

22001001000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8097534456.

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

Adding to 22001001000121 its reverse (12100010010022), we get a palindrome (34101011010143).

Subtracting from 22001001000121 its reverse (12100010010022), we obtain a palindrome (9900990990099).

It can be divided in two parts, 220010010001 and 21, that added together give a palindrome (220010010022).

The spelling of 22001001000121 in words is "twenty-two trillion, one billion, one million, one hundred twenty-one", and thus it is an aban number.