2001102021211 has 4 divisors (see below), whose sum is σ = 2049909387624. Its totient is φ = 1952294654800.

The previous prime is 2001102021173. The next prime is 2001102021221. The reversal of 2001102021211 is 1121202011002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2001102021211 - 2³³ = 1992512086619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001102021191 and 2001102021200.

It is not an unprimeable number, because it can be changed into a prime (2001102021221) 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, 24403683145 + ... + 24403683226.

It is an arithmetic number, because the mean of its divisors is an integer number (512477346906).

Almost surely, 2^{2001102021211} is an apocalyptic number.

2001102021211 is a deficient number, since it is larger than the sum of its proper divisors (48807366413).

2001102021211 is an equidigital number, since it uses as much as digits as its factorization.

2001102021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48807366412.

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

Adding to 2001102021211 its reverse (1121202011002), we get a palindrome (3122304032213).

The spelling of 2001102021211 in words is "two trillion, one billion, one hundred two million, twenty-one thousand, two hundred eleven".