2121222210001 has 8 divisors (see below), whose sum is σ = 2125722026880. Its totient is φ = 2116722984768.

The previous prime is 2121222209987. The next prime is 2121222210011. The reversal of 2121222210001 is 1000122221212.

It is a happy number.

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 2121222210001 - 2³⁵ = 2086862471633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121222210011) 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, 7442220 + ... + 7721986.

It is an arithmetic number, because the mean of its divisors is an integer number (265715253360).

Almost surely, 2^{2121222210001} is an apocalyptic number.

It is an amenable number.

2121222210001 is a deficient number, since it is larger than the sum of its proper divisors (4499816879).

2121222210001 is a wasteful number, since it uses less digits than its factorization.

2121222210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295823.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121222210001 its reverse (1000122221212), we get a palindrome (3121344431213).

The spelling of 2121222210001 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred ten thousand, one".