2111001221001 has 8 divisors (see below), whose sum is σ = 2867775243840. Its totient is φ = 1380780672752.

The previous prime is 2111001220969. The next prime is 2111001221023. The reversal of 2111001221001 is 1001221001112.

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 2111001221001 - 2⁵ = 2111001220969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111001221041) 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, 6638368461 + ... + 6638368778.

It is an arithmetic number, because the mean of its divisors is an integer number (358471905480).

Almost surely, 2^{2111001221001} is an apocalyptic number.

It is an amenable number.

2111001221001 is a deficient number, since it is larger than the sum of its proper divisors (756774022839).

2111001221001 is a wasteful number, since it uses less digits than its factorization.

2111001221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276737295.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111001221001 its reverse (1001221001112), we get a palindrome (3112222222113).

The spelling of 2111001221001 in words is "two trillion, one hundred eleven billion, one million, two hundred twenty-one thousand, one".