2011001211121 has 8 divisors (see below), whose sum is σ = 2377538377920. Its totient is φ = 1664276864208.

The previous prime is 2011001211119. The next prime is 2011001211127. The reversal of 2011001211121 is 1211121001102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2011001211121 - 2¹ = 2011001211119 is a prime.

It is a super-2 number, since 2×2011001211121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011001211127) 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, 4953204751 + ... + 4953205156.

It is an arithmetic number, because the mean of its divisors is an integer number (297192297240).

Almost surely, 2^{2011001211121} is an apocalyptic number.

It is an amenable number.

2011001211121 is a deficient number, since it is larger than the sum of its proper divisors (366537166799).

2011001211121 is an equidigital number, since it uses as much as digits as its factorization.

2011001211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906409943.

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

Adding to 2011001211121 its reverse (1211121001102), we get a palindrome (3222122212223).

The spelling of 2011001211121 in words is "two trillion, eleven billion, one million, two hundred eleven thousand, one hundred twenty-one".