2211201021001 has 32 divisors (see below), whose sum is σ = 2668220640000. Its totient is φ = 1829519588736.

The previous prime is 2211201020989. The next prime is 2211201021019. The reversal of 2211201021001 is 1001201021122.

It is not a de Polignac number, because 2211201021001 - 2²⁷ = 2211066803273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211201021091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45204565 + ... + 45253453.

It is an arithmetic number, because the mean of its divisors is an integer number (83381895000).

Almost surely, 2^{2211201021001} is an apocalyptic number.

It is an amenable number.

2211201021001 is a deficient number, since it is larger than the sum of its proper divisors (457019618999).

2211201021001 is an equidigital number, since it uses as much as digits as its factorization.

2211201021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53486 (or 53472 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2211201021001 its reverse (1001201021122), we get a palindrome (3212402042123).

The spelling of 2211201021001 in words is "two trillion, two hundred eleven billion, two hundred one million, twenty-one thousand, one".