2011001112121 has 4 divisors (see below), whose sum is σ = 2016480679552. Its totient is φ = 2005521544692.

The previous prime is 2011001112061. The next prime is 2011001112137. The reversal of 2011001112121 is 1212111001102.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2011001112121 - 2¹¹ = 2011001110073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011001112221) 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, 2739783165 + ... + 2739783898.

It is an arithmetic number, because the mean of its divisors is an integer number (504120169888).

Almost surely, 2^{2011001112121} is an apocalyptic number.

It is an amenable number.

2011001112121 is a deficient number, since it is larger than the sum of its proper divisors (5479567431).

2011001112121 is an equidigital number, since it uses as much as digits as its factorization.

2011001112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479567430.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011001112121 its reverse (1212111001102), we get a palindrome (3223112113223).

The spelling of 2011001112121 in words is "two trillion, eleven billion, one million, one hundred twelve thousand, one hundred twenty-one".