22121121000001 has 8 divisors (see below), whose sum is σ = 22146039385920. Its totient is φ = 22096205905488.

The previous prime is 22121120999933. The next prime is 22121121000029. The reversal of 22121121000001 is 10000012112122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121121000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121121000031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12752455 + ... + 14382883.

It is an arithmetic number, because the mean of its divisors is an integer number (2768254923240).

Almost surely, 2^{22121121000001} is an apocalyptic number.

It is an amenable number.

22121121000001 is a deficient number, since it is larger than the sum of its proper divisors (24918385919).

22121121000001 is a wasteful number, since it uses less digits than its factorization.

22121121000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645703.

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

Adding to 22121121000001 its reverse (10000012112122), we get a palindrome (32121133112123).

The spelling of 22121121000001 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-one million, one", and thus it is an aban number.