2211221021001 has 8 divisors (see below), whose sum is σ = 2948301633504. Its totient is φ = 1474143877920.

The previous prime is 2211221020969. The next prime is 2211221021011. The reversal of 2211221021001 is 1001201221122.

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

It is not a de Polignac number, because 2211221021001 - 2⁵ = 2211221020969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211221021011) 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, 1736461 + ... + 2727221.

It is an arithmetic number, because the mean of its divisors is an integer number (368537704188).

Almost surely, 2^{2211221021001} is an apocalyptic number.

It is an amenable number.

2211221021001 is a deficient number, since it is larger than the sum of its proper divisors (737080612503).

2211221021001 is an equidigital number, since it uses as much as digits as its factorization.

2211221021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734711.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2211221021001 its reverse (1001201221122), we get a palindrome (3212422242123).

The spelling of 2211221021001 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, twenty-one thousand, one".