2221022121001 has 8 divisors (see below), whose sum is σ = 2293530310400. Its totient is φ = 2148567826320.

The previous prime is 2221022120987. The next prime is 2221022121007. The reversal of 2221022121001 is 1001212201222.

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 2221022121001 - 2³³ = 2212432186409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221022121007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13389906 + ... + 13554763.

It is an arithmetic number, because the mean of its divisors is an integer number (286691288800).

Almost surely, 2^{2221022121001} is an apocalyptic number.

It is an amenable number.

2221022121001 is a deficient number, since it is larger than the sum of its proper divisors (72508189399).

2221022121001 is a wasteful number, since it uses less digits than its factorization.

2221022121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26947359.

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

Adding to 2221022121001 its reverse (1001212201222), we get a palindrome (3222234322223).

The spelling of 2221022121001 in words is "two trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one".