2001121304111 has 8 divisors (see below), whose sum is σ = 2011861092384. Its totient is φ = 1990387393120.

The previous prime is 2001121304107. The next prime is 2001121304153. The reversal of 2001121304111 is 1114031211002.

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 2001121304111 - 2² = 2001121304107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001121304111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001121334111) 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, 785675 + ... + 2149308.

It is an arithmetic number, because the mean of its divisors is an integer number (251482636548).

Almost surely, 2^{2001121304111} is an apocalyptic number.

2001121304111 is a deficient number, since it is larger than the sum of its proper divisors (10739788273).

2001121304111 is a wasteful number, since it uses less digits than its factorization.

2001121304111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938641.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2001121304111 its reverse (1114031211002), we get a palindrome (3115152515113).

The spelling of 2001121304111 in words is "two trillion, one billion, one hundred twenty-one million, three hundred four thousand, one hundred eleven".