2221101121001 has 4 divisors (see below), whose sum is σ = 2538401281152. Its totient is φ = 1903800960852.

The previous prime is 2221101120961. The next prime is 2221101121003. The reversal of 2221101121001 is 1001211011222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2221101121001 - 2⁶ = 2221101120937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221101121003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158650080065 + ... + 158650080078.

It is an arithmetic number, because the mean of its divisors is an integer number (634600320288).

Almost surely, 2^{2221101121001} is an apocalyptic number.

It is an amenable number.

2221101121001 is a deficient number, since it is larger than the sum of its proper divisors (317300160151).

2221101121001 is an equidigital number, since it uses as much as digits as its factorization.

2221101121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317300160150.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2221101121001 its reverse (1001211011222), we get a palindrome (3222312132223).

The spelling of 2221101121001 in words is "two trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, one".