2011110120021 has 8 divisors (see below), whose sum is σ = 2725438851424. Its totient is φ = 1318760734320.

The previous prime is 2011110120017. The next prime is 2011110120029. The reversal of 2011110120021 is 1200210111102.

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

It is not a de Polignac number, because 2011110120021 - 2² = 2011110120017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011110119979 and 2011110120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011110120029) 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, 5494836211 + ... + 5494836576.

It is an arithmetic number, because the mean of its divisors is an integer number (340679856428).

Almost surely, 2^{2011110120021} is an apocalyptic number.

It is an amenable number.

2011110120021 is a deficient number, since it is larger than the sum of its proper divisors (714328731403).

2011110120021 is a wasteful number, since it uses less digits than its factorization.

2011110120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989672851.

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

Adding to 2011110120021 its reverse (1200210111102), we get a palindrome (3211320231123).

The spelling of 2011110120021 in words is "two trillion, eleven billion, one hundred ten million, one hundred twenty thousand, twenty-one".