2021130123 has 8 divisors (see below), whose sum is σ = 2695329600. Its totient is φ = 1347175368.

The previous prime is 2021130113. The next prime is 2021130127. The reversal of 2021130123 is 3210311202.

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

It is not a de Polignac number, because 2021130123 - 2¹³ = 2021121931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021130127) 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, 40953 + ... + 75626.

It is an arithmetic number, because the mean of its divisors is an integer number (336916200).

Almost surely, 2^2021130123 is an apocalyptic number.

2021130123 is a deficient number, since it is larger than the sum of its proper divisors (674199477).

2021130123 is a wasteful number, since it uses less digits than its factorization.

2021130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122361.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2021130123 is about 44956.9808038752. The cubic root of 2021130123 is about 1264.3425628679.

Adding to 2021130123 its reverse (3210311202), we get a palindrome (5231441325).

The spelling of 2021130123 in words is "two billion, twenty-one million, one hundred thirty thousand, one hundred twenty-three".