2011221011023 has 8 divisors (see below), whose sum is σ = 2299977596192. Its totient is φ = 1722824250336.

The previous prime is 2011221010991. The next prime is 2011221011071. The reversal of 2011221011023 is 3201101221102.

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

It is not a de Polignac number, because 2011221011023 - 2⁵ = 2011221010991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011221010988 and 2011221011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011221071023) 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, 89944140 + ... + 89966497.

It is an arithmetic number, because the mean of its divisors is an integer number (287497199524).

Almost surely, 2^{2011221011023} is an apocalyptic number.

2011221011023 is a deficient number, since it is larger than the sum of its proper divisors (288756585169).

2011221011023 is a wasteful number, since it uses less digits than its factorization.

2011221011023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179912241.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2011221011023 its reverse (3201101221102), we get a palindrome (5212322232125).

The spelling of 2011221011023 in words is "two trillion, eleven billion, two hundred twenty-one million, eleven thousand, twenty-three".