2211221221001 has 8 divisors (see below), whose sum is σ = 2484850603200. Its totient is φ = 1952382616272.

The previous prime is 2211221220983. The next prime is 2211221221019. The reversal of 2211221221001 is 1001221221122.

It is an interprime number because it is at equal distance from previous prime (2211221220983) and next prime (2211221221019).

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 2211221221001 - 2¹⁴ = 2211221204617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211221221021) 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, 3697694051 + ... + 3697694648.

It is an arithmetic number, because the mean of its divisors is an integer number (310606325400).

Almost surely, 2^{2211221221001} is an apocalyptic number.

It is an amenable number.

2211221221001 is a deficient number, since it is larger than the sum of its proper divisors (273629382199).

2211221221001 is a wasteful number, since it uses less digits than its factorization.

2211221221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395388735.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211221221001 its reverse (1001221221122), we get a palindrome (3212442442123).

The spelling of 2211221221001 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, one".