2101121002011 has 8 divisors (see below), whose sum is σ = 2801508144400. Its totient is φ = 1400740597152.

The previous prime is 2101121001997. The next prime is 2101121002039. The reversal of 2101121002011 is 1102001211012.

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

It is not a de Polignac number, because 2101121002011 - 2³⁷ = 1963682048539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101121002061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905236 + ... + 2240913.

It is an arithmetic number, because the mean of its divisors is an integer number (350188518050).

Almost surely, 2^{2101121002011} is an apocalyptic number.

2101121002011 is a deficient number, since it is larger than the sum of its proper divisors (700387142389).

2101121002011 is a wasteful number, since it uses less digits than its factorization.

2101121002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368765.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101121002011 its reverse (1102001211012), we get a palindrome (3203122213023).

The spelling of 2101121002011 in words is "two trillion, one hundred one billion, one hundred twenty-one million, two thousand, eleven".