22121001021001 has 8 divisors (see below), whose sum is σ = 23083336330560. Its totient is φ = 21158711766192.

The previous prime is 22121001020999. The next prime is 22121001021037. The reversal of 22121001021001 is 10012010012122.

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

It is a cyclic number.

It is not a de Polignac number, because 22121001021001 - 2¹ = 22121001020999 is a prime.

It is a super-2 number, since 2×22121001021001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121001021101) 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, 10530366 + ... + 12455143.

It is an arithmetic number, because the mean of its divisors is an integer number (2885417041320).

Almost surely, 2^{22121001021001} is an apocalyptic number.

It is an amenable number.

22121001021001 is a deficient number, since it is larger than the sum of its proper divisors (962335309559).

22121001021001 is a wasteful number, since it uses less digits than its factorization.

22121001021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23027375.

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

Adding to 22121001021001 its reverse (10012010012122), we get a palindrome (32133011033123).

The spelling of 22121001021001 in words is "twenty-two trillion, one hundred twenty-one billion, one million, twenty-one thousand, one".