2011020243123 has 8 divisors (see below), whose sum is σ = 2839087402128. Its totient is φ = 1261816623104.

The previous prime is 2011020243119. The next prime is 2011020243139. The reversal of 2011020243123 is 3213420201102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011020243123 - 2² = 2011020243119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011020243123.

It is not an unprimeable number, because it can be changed into a prime (2011020243923) 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, 19715884686 + ... + 19715884787.

It is an arithmetic number, because the mean of its divisors is an integer number (354885925266).

Almost surely, 2^{2011020243123} is an apocalyptic number.

2011020243123 is a deficient number, since it is larger than the sum of its proper divisors (828067159005).

2011020243123 is a wasteful number, since it uses less digits than its factorization.

2011020243123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39431769493.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2011020243123 its reverse (3213420201102), we get a palindrome (5224440444225).

The spelling of 2011020243123 in words is "two trillion, eleven billion, twenty million, two hundred forty-three thousand, one hundred twenty-three".